diff --git a/src/Mod/Fem/Gui/ViewProviderFemConstraint.cpp b/src/Mod/Fem/Gui/ViewProviderFemConstraint.cpp
index e06ae0240..3fd782d06 100644
--- a/src/Mod/Fem/Gui/ViewProviderFemConstraint.cpp
+++ b/src/Mod/Fem/Gui/ViewProviderFemConstraint.cpp
@@ -246,11 +246,9 @@ void getLocalCoordinateSystem(const SbVec3f& z, SbVec3f& y, SbVec3f& x)
 void ViewProviderFemConstraint::createPlacement(SoSeparator* sep, const SbVec3f &base, const SbRotation &r)
 {
     SoTranslation* trans = new SoTranslation();
-    trans->ref();
     trans->translation.setValue(base);
     sep->addChild(trans);
     SoRotation* rot = new SoRotation();
-    rot->ref();
     rot->rotation.setValue(r);
     sep->addChild(rot);
 }
@@ -269,11 +267,9 @@ void ViewProviderFemConstraint::createCone(SoSeparator* sep, const double height
 {
     // Adjust cone so that the tip is on base
     SoTranslation* trans = new SoTranslation();
-    trans->ref();
     trans->translation.setValue(SbVec3f(0,-height/2,0));
     sep->addChild(trans);
     SoCone* cone = new SoCone();
-    cone->ref();
     cone->height.setValue(height);
     cone->bottomRadius.setValue(radius);
     sep->addChild(cone);
@@ -302,7 +298,6 @@ void ViewProviderFemConstraint::updateCone(const SoNode* node, const int idx, co
 void ViewProviderFemConstraint::createCylinder(SoSeparator* sep, const double height, const double radius)
 {
     SoCylinder* cyl = new SoCylinder();
-    cyl->ref();
     cyl->height.setValue(height);
     cyl->radius.setValue(radius);
     sep->addChild(cyl);
@@ -329,7 +324,6 @@ void ViewProviderFemConstraint::updateCylinder(const SoNode* node, const int idx
 void ViewProviderFemConstraint::createCube(SoSeparator* sep, const double width, const double length, const double height)
 {
     SoCube* cube = new SoCube();
-    cube->ref();
     cube->width.setValue(width);
     cube->depth.setValue(length);
     cube->height.setValue(height);