diff --git a/src/Mod/Fem/Gui/Command.cpp b/src/Mod/Fem/Gui/Command.cpp
index 5143731723..e54a07a1d8 100644
--- a/src/Mod/Fem/Gui/Command.cpp
+++ b/src/Mod/Fem/Gui/Command.cpp
@@ -640,7 +640,7 @@ CmdFemConstraintInitialTemperature::CmdFemConstraintInitialTemperature()
     sToolTipText    = QT_TR_NOOP("Creates a FEM constraint for initial temperature acting on a body");
     sWhatsThis      = "FEM_ConstraintInitialTemperature";
     sStatusTip      = sToolTipText;
-    sPixmap         = "fem-constraint-InitialTemperature";
+    sPixmap         = "fem-constraint-initial-temperature";
 }
 
 void CmdFemConstraintInitialTemperature::activated(int)
diff --git a/src/Mod/Fem/Gui/TaskFemConstraintInitialTemperature.cpp b/src/Mod/Fem/Gui/TaskFemConstraintInitialTemperature.cpp
index d9c9002440..d9e8e1098f 100644
--- a/src/Mod/Fem/Gui/TaskFemConstraintInitialTemperature.cpp
+++ b/src/Mod/Fem/Gui/TaskFemConstraintInitialTemperature.cpp
@@ -61,7 +61,7 @@ using namespace Gui;
 /* TRANSLATOR FemGui::TaskFemConstraintInitialTemperature */
 
 TaskFemConstraintInitialTemperature::TaskFemConstraintInitialTemperature(ViewProviderFemConstraintInitialTemperature *ConstraintView,QWidget *parent)
-  : TaskFemConstraint(ConstraintView, parent, "fem-constraint-InitialTemperature")
+  : TaskFemConstraint(ConstraintView, parent, "fem-constraint-initial-temperature")
 {
     proxy = new QWidget(this);
     ui = new Ui_TaskFemConstraintInitialTemperature();
diff --git a/src/Mod/Fem/Gui/ViewProviderFemConstraintInitialTemperature.cpp b/src/Mod/Fem/Gui/ViewProviderFemConstraintInitialTemperature.cpp
index f129552868..832f518f63 100644
--- a/src/Mod/Fem/Gui/ViewProviderFemConstraintInitialTemperature.cpp
+++ b/src/Mod/Fem/Gui/ViewProviderFemConstraintInitialTemperature.cpp
@@ -54,7 +54,7 @@ PROPERTY_SOURCE(FemGui::ViewProviderFemConstraintInitialTemperature, FemGui::Vie
 
 ViewProviderFemConstraintInitialTemperature::ViewProviderFemConstraintInitialTemperature()
 {
-    sPixmap = "fem-constraint-InitialTemperature";
+    sPixmap = "fem-constraint-initial-temperature";
     ADD_PROPERTY(FaceColor,(0.2f,0.3f,0.2f));
 }