diff --git a/web/app/sketcher/parametric.js b/web/app/sketcher/parametric.js
index d8e0d9ad..86409b69 100644
--- a/web/app/sketcher/parametric.js
+++ b/web/app/sketcher/parametric.js
@@ -199,11 +199,17 @@ ParametricManager.prototype.lock = function(objs) {
 };
 
 ParametricManager.prototype.vertical = function(objs) {
-  this.add(new Constraints.Vertical(fetch.line(objs)));
+  const lines = fetch.lines(objs);
+  for (let line of lines) {
+    this.add(new Constraints.Vertical(line));
+  }
 };
 
 ParametricManager.prototype.horizontal = function(objs) {
-  this.add(new Constraints.Horizontal(fetch.line(objs)));
+  const lines = fetch.lines(objs);
+  for (let line of lines) {
+    this.add(new Constraints.Horizontal(line));
+  }
 };
 
 ParametricManager.prototype.parallel = function(objs) {