diff --git a/web/app/3d/cad-utils.js b/web/app/3d/cad-utils.js
index 286e6cce..9a558145 100644
--- a/web/app/3d/cad-utils.js
+++ b/web/app/3d/cad-utils.js
@@ -1,4 +1,4 @@
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 import BBox from '../math/bbox'
 import {HashTable} from '../utils/hashmap'
 import {Graph} from '../math/graph'
diff --git a/web/app/3d/craft/brep/cut-extrude.js b/web/app/3d/craft/brep/cut-extrude.js
index 4c59dae9..7a75cd55 100644
--- a/web/app/3d/craft/brep/cut-extrude.js
+++ b/web/app/3d/craft/brep/cut-extrude.js
@@ -1,6 +1,6 @@
 import {Matrix3, BasisForPlane, ORIGIN} from '../../../math/l3space'
 import * as math from '../../../math/math'
-import Vector from '../../../math/vector'
+import Vector from 'math/vector';
 import {enclose, iterateSegments} from '../../../brep/brep-enclose'
 import * as stitching from '../../../brep/stitching'
 import {Loop} from '../../../brep/topo/loop'
diff --git a/web/app/3d/craft/brep/wizards/cut-extrude-wizard.js b/web/app/3d/craft/brep/wizards/cut-extrude-wizard.js
index 8561914b..b3a19fb7 100644
--- a/web/app/3d/craft/brep/wizards/cut-extrude-wizard.js
+++ b/web/app/3d/craft/brep/wizards/cut-extrude-wizard.js
@@ -2,7 +2,7 @@ import {CURRENT_SELECTION as S} from './wizard'
 import {PreviewWizard, SketchBasedPreviewer} from './preview-wizard'
 import {getEncloseDetails} from '../cut-extrude'
 import {TriangulatePolygons} from '../../../tess/triangulation'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 import {curveTessParams} from "../../../../brep/geom/impl/curve/curve-tess";
 
 
diff --git a/web/app/3d/craft/brep/wizards/plane-wizard.js b/web/app/3d/craft/brep/wizards/plane-wizard.js
index f1b7a0c2..fd5790fc 100644
--- a/web/app/3d/craft/brep/wizards/plane-wizard.js
+++ b/web/app/3d/craft/brep/wizards/plane-wizard.js
@@ -1,7 +1,7 @@
 import {PreviewWizard, IMAGINARY_SURFACE_MATERIAL} from './preview-wizard'
 import {CURRENT_SELECTION as S} from './wizard'
 import {AXIS, IDENTITY_BASIS, STANDARD_BASES} from '../../../../math/l3space'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 
 const METADATA = [
   ['orientation', 'choice', 'XY', {options: ['XY', 'XZ', 'ZY']}],
diff --git a/web/app/3d/craft/brep/wizards/revolve-wizard.js b/web/app/3d/craft/brep/wizards/revolve-wizard.js
index 9ddf9b8d..3aa9adac 100644
--- a/web/app/3d/craft/brep/wizards/revolve-wizard.js
+++ b/web/app/3d/craft/brep/wizards/revolve-wizard.js
@@ -3,7 +3,7 @@ import {PreviewWizard, SketchBasedNurbsPreviewer } from './preview-wizard'
 import {TriangulatePolygons} from '../../../tess/triangulation'
 import {revolveToWallNurbs} from '../../../../brep/brep-builder'
 import {evalPivot} from '../revolve'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 
 const METADATA = [
   ['angle'   , 'number',  5, {min: -360, max: 360, step: 10}],
diff --git a/web/app/3d/craft/mesh/revolve.js b/web/app/3d/craft/mesh/revolve.js
index f743c897..240ad1a2 100644
--- a/web/app/3d/craft/mesh/revolve.js
+++ b/web/app/3d/craft/mesh/revolve.js
@@ -1,5 +1,5 @@
 import {Matrix3} from '../../../math/l3space'
-import Vector from '../../../math/vector'
+import Vector from 'math/vector';
 import * as math from '../../../math/math'
 import {createShared} from '../../cad-utils'
 
diff --git a/web/app/3d/craft/mesh/wizards/extrude.js b/web/app/3d/craft/mesh/wizards/extrude.js
index ed50a14c..4f41a9d2 100644
--- a/web/app/3d/craft/mesh/wizards/extrude.js
+++ b/web/app/3d/craft/mesh/wizards/extrude.js
@@ -1,7 +1,7 @@
 import * as tk from '../../../../ui/toolkit.js'
 import * as workbench from '../workbench'
 import * as cad_utils from '../../../cad-utils'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 import {Matrix3, ORIGIN} from '../../../../math/l3space'
 import {OpWizard, IMAGINE_MATERIAL, BASE_MATERIAL} from './wizard-commons'
 
diff --git a/web/app/3d/craft/mesh/wizards/import.js b/web/app/3d/craft/mesh/wizards/import.js
index 27492631..fa7b7edb 100644
--- a/web/app/3d/craft/mesh/wizards/import.js
+++ b/web/app/3d/craft/mesh/wizards/import.js
@@ -1,7 +1,7 @@
 import * as tk from '../../../../ui/toolkit.js'
 import * as workbench from '../workbench'
 import * as cad_utils from '../../../cad-utils'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 import {Wizard} from './wizard-commons'
 import {LoadSTLFromURL} from '../../../io'
 
diff --git a/web/app/3d/craft/mesh/wizards/revolve.js b/web/app/3d/craft/mesh/wizards/revolve.js
index 5115d910..3ad6410c 100644
--- a/web/app/3d/craft/mesh/wizards/revolve.js
+++ b/web/app/3d/craft/mesh/wizards/revolve.js
@@ -1,7 +1,7 @@
 import * as tk from '../../../../ui/toolkit.js'
 import * as workbench from '../workbench'
 import * as cad_utils from '../../../cad-utils'
-import Vector from '../../../../math/vector'
+import Vector from 'math/vector';
 import {Matrix3, ORIGIN} from '../../../../math/l3space'
 import {revolveToTriangles} from '../revolve'
 import {OpWizard, IMAGINARY_SURFACE_MATERIAL, } from './wizard-commons'
diff --git a/web/app/3d/craft/mesh/workbench.js b/web/app/3d/craft/mesh/workbench.js
index 0cf2b159..d92132b8 100644
--- a/web/app/3d/craft/mesh/workbench.js
+++ b/web/app/3d/craft/mesh/workbench.js
@@ -1,4 +1,4 @@
-import Vector from '../../../math/vector'
+import Vector from 'math/vector';
 import * as cad_utils from '../../cad-utils'
 import * as math from '../../../math/math'
 import {LUT} from '../../../math/bezier-cubic'
diff --git a/web/app/3d/craft/sketch/sketch-reader.js b/web/app/3d/craft/sketch/sketch-reader.js
index bf458b72..35851fef 100644
--- a/web/app/3d/craft/sketch/sketch-reader.js
+++ b/web/app/3d/craft/sketch/sketch-reader.js
@@ -1,6 +1,6 @@
 import * as sm from './sketch-model'
 import {Matrix3, AXIS, ORIGIN} from '../../../math/l3space'
-import Vector from '../../../math/vector'
+import Vector from 'math/vector';
 import {Graph} from '../../../math/graph'
 import * as math from '../../../math/math'
 import {HashTable} from '../../../utils/hashmap'
diff --git a/web/app/3d/debug.js b/web/app/3d/debug.js
index 69e9204f..c06d25c3 100644
--- a/web/app/3d/debug.js
+++ b/web/app/3d/debug.js
@@ -2,7 +2,7 @@ import {checkForSelectedFaces} from './actions/action-helpers'
 import {nurbsToThreeGeom, triangulateToThree} from './scene/brep-scene-object'
 import {createSolidMaterial} from './scene/scene-object'
 import DPR from '../utils/dpr'
-import Vector from "../math/vector";
+import Vector from 'math/vector';
 import {NurbsCurve} from "../brep/geom/impl/nurbs";
 import * as ui from '../ui/ui';
 
diff --git a/web/app/3d/mesh.js b/web/app/3d/mesh.js
index 4d153379..0d75a97a 100644
--- a/web/app/3d/mesh.js
+++ b/web/app/3d/mesh.js
@@ -1,4 +1,4 @@
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 import * as cad_utils from './cad-utils'
 import * as math from '../math/math'
 import {Matrix3, AXIS, ORIGIN} from '../math/l3space'
diff --git a/web/app/3d/modeler-app.js b/web/app/3d/modeler-app.js
index 2e02d4c3..7849a3a7 100644
--- a/web/app/3d/modeler-app.js
+++ b/web/app/3d/modeler-app.js
@@ -1,3 +1,4 @@
+import './scene/vector-three-ench'
 import {Bus} from '../ui/toolkit'
 import {Viewer} from './viewer'
 import {UI} from './ui/ctrl'
@@ -6,7 +7,7 @@ import ControlBar from './ui/control-bar'
 import {InputManager} from './ui/input-manager'
 import {ActionManager} from './actions/actions'
 import * as AllActions from './actions/all-actions'
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 import {Matrix3, AXIS, ORIGIN, IDENTITY_BASIS} from '../math/l3space'
 import {Craft} from './craft/craft'
 import {ReadSketch}  from './craft/sketch/sketch-reader'
diff --git a/web/app/3d/scene/brep-scene-object.js b/web/app/3d/scene/brep-scene-object.js
index dcb999f8..05c5d789 100644
--- a/web/app/3d/scene/brep-scene-object.js
+++ b/web/app/3d/scene/brep-scene-object.js
@@ -1,4 +1,4 @@
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {EDGE_AUX, FACE_CHUNK} from '../../brep/stitching'
 import {normalOfCCWSeq} from '../cad-utils'
 import {TriangulateFace} from '../tess/triangulation'
diff --git a/web/app/3d/scene/mesh-scene-object.js b/web/app/3d/scene/mesh-scene-object.js
index b94e7796..cd395d64 100644
--- a/web/app/3d/scene/mesh-scene-object.js
+++ b/web/app/3d/scene/mesh-scene-object.js
@@ -1,5 +1,5 @@
 import {HashTable} from '../../utils/hashmap'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import Counters from '../counters'
 import {findOutline, segmentsToPaths, reconstructSketchBounds} from '../craft/mesh/workbench'
 import {Matrix3, AXIS} from '../../math/l3space'
diff --git a/web/app/3d/scene/plane-scene-object.js b/web/app/3d/scene/plane-scene-object.js
index 1d8cebce..852553be 100644
--- a/web/app/3d/scene/plane-scene-object.js
+++ b/web/app/3d/scene/plane-scene-object.js
@@ -1,4 +1,4 @@
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {STANDARD_BASES} from '../../math/l3space'
 import {Plane} from '../../brep/geom/impl/plane'
 import {SceneSolid, SceneFace} from './scene-object'
diff --git a/web/app/3d/scene/scene-object.js b/web/app/3d/scene/scene-object.js
index a2f07207..8af95af5 100644
--- a/web/app/3d/scene/scene-object.js
+++ b/web/app/3d/scene/scene-object.js
@@ -1,5 +1,5 @@
 import {HashTable} from '../../utils/hashmap'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import Counters from '../counters'
 import {Matrix3, BasisForPlane} from '../../math/l3space'
 import {isCurveClass} from '../cad-utils'
diff --git a/web/app/math/vector.js b/web/app/3d/scene/vector-three-ench.js
similarity index 50%
rename from web/app/math/vector.js
rename to web/app/3d/scene/vector-three-ench.js
index 216e3cb8..155ce2f0 100644
--- a/web/app/math/vector.js
+++ b/web/app/3d/scene/vector-three-ench.js
@@ -1,9 +1,5 @@
-import Vector from 'math/vector'
-
-console.log(new Vector().fromData)
+import Vector from 'math/vector';
 
 Vector.prototype.three = function() {
   return new THREE.Vector3(this.x, this.y, this.z);
 };
-
-export default Vector;
\ No newline at end of file
diff --git a/web/app/3d/tess/brep-tess.js b/web/app/3d/tess/brep-tess.js
index aea03cab..c32f6659 100644
--- a/web/app/3d/tess/brep-tess.js
+++ b/web/app/3d/tess/brep-tess.js
@@ -1,4 +1,4 @@
-import Vector from "../../math/vector";
+import Vector from 'math/vector';
 import ClipperLib from 'clipper-lib';
 import libtess from 'libtess'
 
diff --git a/web/app/3d/tess/triangulation.js b/web/app/3d/tess/triangulation.js
index 6ab70f9e..9d8275f0 100644
--- a/web/app/3d/tess/triangulation.js
+++ b/web/app/3d/tess/triangulation.js
@@ -1,7 +1,7 @@
 import libtess from 'libtess'
 import {Point} from '../../brep/geom/point'
 import {Vertex} from '../../brep/topo/vertex'
-import Vector from "../../math/vector";
+import Vector from 'math/vector';
 
 function initTesselator() {
   // function called for each vertex of tesselator output
diff --git a/web/app/brep/geom/impl/nurbs.js b/web/app/brep/geom/impl/nurbs.js
index 24de2ad1..849c375c 100644
--- a/web/app/brep/geom/impl/nurbs.js
+++ b/web/app/brep/geom/impl/nurbs.js
@@ -2,7 +2,7 @@ import {BasisForPlane, Matrix3} from '../../../math/l3space'
 import * as math from  '../../../math/math'
 import {Point} from '../point'
 import {Surface} from "../surface";
-import Vector from "../../../math/vector";
+import Vector from 'math/vector';
 import * as ext from "./nurbs-ext";
 import {EPSILON, eqEps, eqSqTol, TOLERANCE, TOLERANCE_SQ, ueq, veq, veq3, veqNeg} from "../tolerance";
 import curveIntersect from "./curve/curves-isec";
diff --git a/web/app/brep/geom/point.js b/web/app/brep/geom/point.js
index b05c851b..8bc26155 100644
--- a/web/app/brep/geom/point.js
+++ b/web/app/brep/geom/point.js
@@ -1,3 +1,3 @@
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 
 export const Point = Vector;
\ No newline at end of file
diff --git a/web/app/brep/nurbs-tiling.js b/web/app/brep/nurbs-tiling.js
index c7206160..a7e5021f 100644
--- a/web/app/brep/nurbs-tiling.js
+++ b/web/app/brep/nurbs-tiling.js
@@ -1,4 +1,4 @@
-import Vector from  '../math/vector'
+import Vector from 'math/vector';
 
 class Tree {
   
diff --git a/web/app/brep/operations/evolve-face.js b/web/app/brep/operations/evolve-face.js
index 84255782..44e06d89 100644
--- a/web/app/brep/operations/evolve-face.js
+++ b/web/app/brep/operations/evolve-face.js
@@ -1,6 +1,6 @@
 import {Face} from '../topo/face';
 import {Vertex} from '../topo/vertex';
-import Vector from '../../math/vector';
+import Vector from 'math/vector';
 import {isCCW} from '../../math/math';
 import PIP from '../../3d/tess/pip';
 
diff --git a/web/app/math/bbox.js b/web/app/math/bbox.js
index ba0e3da8..c3979066 100644
--- a/web/app/math/bbox.js
+++ b/web/app/math/bbox.js
@@ -1,4 +1,4 @@
-import Vector from './vector'
+import Vector from 'math/vector';
 
 export default class BBox {
   
diff --git a/web/app/math/bezier-cubic.js b/web/app/math/bezier-cubic.js
index 3b6f9f75..e1f81d9b 100644
--- a/web/app/math/bezier-cubic.js
+++ b/web/app/math/bezier-cubic.js
@@ -1,4 +1,4 @@
-import Vector from './vector'
+import Vector from 'math/vector';
 import * as math from './math'
 
 export function LUT(a, b, cp1, cp2, scale) {
diff --git a/web/app/math/l3space.js b/web/app/math/l3space.js
index c8d5cb99..82bd14ce 100644
--- a/web/app/math/l3space.js
+++ b/web/app/math/l3space.js
@@ -1,4 +1,4 @@
-import Vector from './vector';
+import Vector from 'math/vector';
 
 var ORIGIN = new Vector(0, 0, 0);
 
diff --git a/web/app/math/math.js b/web/app/math/math.js
index e54d7855..bea3fb4d 100644
--- a/web/app/math/math.js
+++ b/web/app/math/math.js
@@ -1,4 +1,4 @@
-import Vector from './vector'
+import Vector from 'math/vector';
 import BBox from './bbox'
 
 export const TOLERANCE = 1E-6;
diff --git a/web/app/sketcher/io.js b/web/app/sketcher/io.js
index c9d93b0a..0c9d4311 100644
--- a/web/app/sketcher/io.js
+++ b/web/app/sketcher/io.js
@@ -11,7 +11,7 @@ import {BezierCurve} from './shapes/bezier-curve'
 import {HDimension, VDimension, Dimension, DiameterDimension} from './shapes/dim'
 import {Constraints} from './parametric'
 import {HashTable} from '../utils/hashmap'
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 
 const Types = {
   END_POINT : 'TCAD.TWO.EndPoint',
diff --git a/web/app/sketcher/parametric.js b/web/app/sketcher/parametric.js
index 0b0b15d1..a085fafc 100644
--- a/web/app/sketcher/parametric.js
+++ b/web/app/sketcher/parametric.js
@@ -2,7 +2,7 @@ import * as utils from '../utils/utils'
 import {Ref} from './shapes/ref'
 import {Param, prepare} from './constr/solver'
 import {createByConstraintName} from './constr/constraints'
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 import * as math from '../math/math'
 import * as fetch from './fetchers'
 
diff --git a/web/app/sketcher/shapes/arc.js b/web/app/sketcher/shapes/arc.js
index 9986f4a3..54bc46fe 100644
--- a/web/app/sketcher/shapes/arc.js
+++ b/web/app/sketcher/shapes/arc.js
@@ -1,6 +1,6 @@
 import * as utils from '../../utils/utils';
 import * as math from '../../math/math';
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {Ref} from './ref'
 import {Constraints} from '../parametric'
 import {SketchObject} from './sketch-object'
diff --git a/web/app/sketcher/shapes/dim.js b/web/app/sketcher/shapes/dim.js
index f3e6d246..bd4f089a 100644
--- a/web/app/sketcher/shapes/dim.js
+++ b/web/app/sketcher/shapes/dim.js
@@ -1,6 +1,6 @@
 import * as utils from '../../utils/utils'
 import * as math from '../../math/math'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {SketchObject} from './sketch-object'
 
 class LinearDimension extends SketchObject {
diff --git a/web/app/sketcher/shapes/point.js b/web/app/sketcher/shapes/point.js
index 4dfff6be..73653e4a 100644
--- a/web/app/sketcher/shapes/point.js
+++ b/web/app/sketcher/shapes/point.js
@@ -1,7 +1,7 @@
 import {SketchObject} from './sketch-object'
 import {DrawPoint} from './draw-utils'
 import {Generator} from '../id-generator'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 
 export class EndPoint extends SketchObject {
 
diff --git a/web/app/sketcher/shapes/segment.js b/web/app/sketcher/shapes/segment.js
index aebc9b5d..f663f3c5 100644
--- a/web/app/sketcher/shapes/segment.js
+++ b/web/app/sketcher/shapes/segment.js
@@ -1,5 +1,5 @@
 import {SketchObject} from './sketch-object'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {Constraints} from '../parametric'
 import * as math from '../../math/math'
 
diff --git a/web/app/sketcher/tools/arc.js b/web/app/sketcher/tools/arc.js
index aad93933..4dfe3422 100644
--- a/web/app/sketcher/tools/arc.js
+++ b/web/app/sketcher/tools/arc.js
@@ -1,7 +1,7 @@
 import {Arc} from '../shapes/arc'
 import {EndPoint} from '../shapes/point'
 import {Tool} from './tool'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import * as math from '../../math/math';
 
 export class AddArcTool extends Tool {
diff --git a/web/app/sketcher/tools/bezier-curve.js b/web/app/sketcher/tools/bezier-curve.js
index 5f459977..e1915732 100644
--- a/web/app/sketcher/tools/bezier-curve.js
+++ b/web/app/sketcher/tools/bezier-curve.js
@@ -2,7 +2,7 @@ import {Tool} from './tool'
 import {EndPoint} from '../shapes/point'
 import {BezierCurve} from '../shapes/bezier-curve'
 import {Constraints} from '../parametric'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import * as math from '../../math/math'
 
 export class BezierCurveTool extends Tool {
diff --git a/web/app/sketcher/tools/dim.js b/web/app/sketcher/tools/dim.js
index e549ee97..a58fc4f6 100644
--- a/web/app/sketcher/tools/dim.js
+++ b/web/app/sketcher/tools/dim.js
@@ -1,5 +1,5 @@
 import {HDimension, VDimension, Dimension, DiameterDimension} from '../shapes/dim'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {EndPoint} from '../shapes/point'
 import {Tool} from './tool'
 
diff --git a/web/app/sketcher/tools/ellipse.js b/web/app/sketcher/tools/ellipse.js
index b6c9036d..fde9d84a 100644
--- a/web/app/sketcher/tools/ellipse.js
+++ b/web/app/sketcher/tools/ellipse.js
@@ -2,7 +2,7 @@ import {Tool} from './tool'
 import {EndPoint} from '../shapes/point'
 import {Ellipse} from '../shapes/ellipse'
 import {EllipticalArc} from '../shapes/elliptical-arc'
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 
 export const STATE_POINT1 = 0;
 export const STATE_POINT2 = 1;
diff --git a/web/app/sketcher/tools/fillet.js b/web/app/sketcher/tools/fillet.js
index 459f49d3..6d8a5931 100644
--- a/web/app/sketcher/tools/fillet.js
+++ b/web/app/sketcher/tools/fillet.js
@@ -1,4 +1,4 @@
-import Vector from '../../math/vector'
+import Vector from 'math/vector';
 import {Styles} from '../styles'
 import * as fetch from '../fetchers'
 import * as math from '../../math/math'
diff --git a/web/app/sketcher/tools/offset.js b/web/app/sketcher/tools/offset.js
index b101ffcd..b396df67 100644
--- a/web/app/sketcher/tools/offset.js
+++ b/web/app/sketcher/tools/offset.js
@@ -1,7 +1,7 @@
 import {LoopPickTool} from './loop-pick'
 import {Constraints} from '../parametric'
 import * as math from '../../math/math';
-import Vector from '../../math/vector';
+import Vector from 'math/vector';
 import {swap} from '../../utils/utils'
 import {EndPoint} from '../shapes/point'
 import {Arc} from '../shapes/arc'
diff --git a/web/app/sketcher/viewer2d.js b/web/app/sketcher/viewer2d.js
index 423fea5f..772499fc 100644
--- a/web/app/sketcher/viewer2d.js
+++ b/web/app/sketcher/viewer2d.js
@@ -11,7 +11,7 @@ import {EndPoint} from './shapes/point'
 import {Point} from './shapes/primitives'
 import {ReferencePoint} from './shapes/reference-point'
 import {BasisOrigin} from './shapes/basis-origin'
-import Vector from '../math/vector'
+import Vector from 'math/vector';
 
 import * as draw_utils from './shapes/draw-utils'
 import * as math from '../math/math'
diff --git a/web/test/cases/offset.js b/web/test/cases/offset.js
index 7db37629..a5f76cfa 100644
--- a/web/test/cases/offset.js
+++ b/web/test/cases/offset.js
@@ -1,7 +1,7 @@
 import * as test from '../test'
 import * as sketcher_utils from '../utils/sketcher-utils'
 import {TestMouseEvent} from '../utils/mouse-event'
-import Vector from '../../app/math/vector';
+import Vector from 'math/vector';
 
 export default {
   testRefreshHappensOnce: function (env) {
diff --git a/web/test/cases/segment.js b/web/test/cases/segment.js
index 757ab38e..470aa114 100644
--- a/web/test/cases/segment.js
+++ b/web/test/cases/segment.js
@@ -2,7 +2,7 @@ import * as test from '../test'
 import * as sketcher_utils from '../utils/sketcher-utils'
 import * as keyboard from '../utils/keyboard'
 import {TestMouseEvent} from '../utils/mouse-event'
-import Vector from '../../app/math/vector';
+import Vector from 'math/vector';
 
 export default {
   testSegmentWizard: function(env) {
diff --git a/web/test/utils/sketcher-utils.js b/web/test/utils/sketcher-utils.js
index 15ba93c6..16a200d4 100644
--- a/web/test/utils/sketcher-utils.js
+++ b/web/test/utils/sketcher-utils.js
@@ -1,5 +1,5 @@
 import {TestMouseEvent} from './mouse-event'
-import Vector from '../../app/math/vector';
+import Vector from 'math/vector';
 
 export function toModel(app, x, y) {
   return app.viewer._screenToModel(x, y);