diff --git a/web/app/sketcher/parametric.js b/web/app/sketcher/parametric.js
index f0b7ff7c..9096e956 100644
--- a/web/app/sketcher/parametric.js
+++ b/web/app/sketcher/parametric.js
@@ -515,32 +515,19 @@ TCAD.TWO.ParametricManager.prototype.prepareForSubSystem = function(locked, subS
   }
   var viewer = this.viewer;
   function sync() {
-    var rollback = [];
     for (p in pdict) {
       _p = pdict[p];
-      rollback.push([_p._backingParam, _p._backingParam.get()]);
       _p._backingParam.set(_p.get());
     }
 
     //Make sure all coincident constraints are equal
-    var rollbackCo = [];
     for (ei = 0; ei < equalsIndex.length; ++ei) {
       var master = equalsDict[ equalsIndex[ei][0]];
       for (i = 1; i < equalsIndex[ei].length; ++i) {
         var slave = equalsDict[equalsIndex[ei][i]];
-        rollbackCo.push([slave.id, slave.get()]); 
         slave.set(master.get());
       }
     }
-    
-    if (false && !viewer.validateGeom()) { //Disabled
-      for (i = 0; i < rollback.length; ++i) {
-        rollback[i][0].set(rollback[i][0]);
-      }
-      for (i = 0; i < rollbackCo.length; ++i) {
-        rollbackCo[i][0].set(rollbackCo[i][0]);
-      }
-    }
   }
   
   solver.solve = solve;