diff --git a/src/Mod/Fem/Gui/TaskFemConstraintGear.cpp b/src/Mod/Fem/Gui/TaskFemConstraintGear.cpp
index e6bb15237..a4bd3ad0d 100644
--- a/src/Mod/Fem/Gui/TaskFemConstraintGear.cpp
+++ b/src/Mod/Fem/Gui/TaskFemConstraintGear.cpp
@@ -274,7 +274,7 @@ TaskDlgFemConstraintGear::TaskDlgFemConstraintGear(ViewProviderFemConstraintGear
 {
     this->ConstraintView = ConstraintView;
     assert(ConstraintView);
-    this->parameter = new TaskFemConstraintGear(ConstraintView, 0, "Fem_ConstraintGear");
+    this->parameter = new TaskFemConstraintGear(ConstraintView, 0, "fem-constraint-gear");
 
     Content.push_back(parameter);
 }
diff --git a/src/Mod/Fem/Gui/TaskFemConstraintPulley.cpp b/src/Mod/Fem/Gui/TaskFemConstraintPulley.cpp
index 16d0be6cb..fbc4fbe2e 100644
--- a/src/Mod/Fem/Gui/TaskFemConstraintPulley.cpp
+++ b/src/Mod/Fem/Gui/TaskFemConstraintPulley.cpp
@@ -50,7 +50,7 @@ using namespace Gui;
 /* TRANSLATOR FemGui::TaskFemConstraintPulley */
 
 TaskFemConstraintPulley::TaskFemConstraintPulley(ViewProviderFemConstraintPulley *ConstraintView,QWidget *parent)
-    : TaskFemConstraintGear(ConstraintView, parent, "Fem_ConstraintPulley")
+    : TaskFemConstraintGear(ConstraintView, parent, "fem-constraint-pulley")
 {
     connect(ui->spinOtherDiameter, SIGNAL(valueChanged(double)),
             this, SLOT(onOtherDiameterChanged(double)));