diff --git a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
index 27694844bd..28812aa00f 100644
--- a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
+++ b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
@@ -70,7 +70,9 @@ class _TaskPanel(object):
         self.form = [self._refWidget, self._paramWidget]
         analysis = femutils.findAnalysisOfMember(obj)
         self._mesh = femutils.get_single_member(analysis, "Fem::FemMeshObject")
-        self._part = self._mesh.Part if self._mesh is not None else None
+        self._part = None
+        if self._mesh is not None:
+            self._part = femutils.get_part_to_mesh(self._mesh)
         self._partVisible = None
         self._meshVisible = None
 
diff --git a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintFlowVelocity.py b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintFlowVelocity.py
index 824323fd36..6ebfcf3d50 100644
--- a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintFlowVelocity.py
+++ b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintFlowVelocity.py
@@ -71,10 +71,8 @@ class _TaskPanel(object):
         analysis = femutils.findAnalysisOfMember(obj)
         self._mesh = femutils.get_single_member(analysis, "Fem::FemMeshObject")
         self._part = None
-        if hasattr(self._mesh, "Part"):  # Geometry of Gmesh mesh obj
-            self._part = self._mesh.Part
-        elif hasattr(self._mesh, "Shape"):  # Geometry of Netgen mesh obj
-            self._part = self._mesh.Shape
+        if self._mesh is not None:
+            self._part = femutils.get_part_to_mesh(self._mesh)
         self._partVisible = None
         self._meshVisible = None
 
diff --git a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintInitialFlowVelocity.py b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintInitialFlowVelocity.py
index e4c255cc42..d3b11a82c6 100644
--- a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintInitialFlowVelocity.py
+++ b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintInitialFlowVelocity.py
@@ -67,7 +67,9 @@ class _TaskPanel(object):
         self.form = [self._paramWidget]
         analysis = femutils.findAnalysisOfMember(obj)
         self._mesh = femutils.get_single_member(analysis, "Fem::FemMeshObject")
-        self._part = self._mesh.Part if self._mesh is not None else None
+        self._part = None
+        if self._mesh is not None:
+            self._part = femutils.get_part_to_mesh(self._mesh)
         self._partVisible = None
         self._meshVisible = None