diff --git a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
index ba44d0b41b..1a5bf54b7c 100644
--- a/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
+++ b/src/Mod/Fem/femguiobjects/_ViewProviderFemConstraintElectrostaticPotential.py
@@ -122,12 +122,12 @@ class _TaskPanel(object):
 
         self._paramWidget.electricInfinityBox.setChecked(
             self._obj.ElectricInfinity)
-                                                         
+
         self._paramWidget.capacitanceBodyBox.setChecked(
             not self._obj.CapacitanceBodyEnabled)
         self._paramWidget.capacitanceBody_spinBox.setValue(
             self._obj.CapacitanceBody)
-        
+
     def _applyWidgetChanges(self):
         unit = "V"
         self._obj.PotentialEnabled = \
diff --git a/src/Mod/Fem/femobjects/_FemConstraintElectrostaticPotential.py b/src/Mod/Fem/femobjects/_FemConstraintElectrostaticPotential.py
index e27b4f173f..e6a44ccccd 100644
--- a/src/Mod/Fem/femobjects/_FemConstraintElectrostaticPotential.py
+++ b/src/Mod/Fem/femobjects/_FemConstraintElectrostaticPotential.py
@@ -37,22 +37,38 @@ class Proxy(FemConstraint.Proxy):
     def __init__(self, obj):
         super(Proxy, self).__init__(obj)
         obj.addProperty(
-            "App::PropertyFloat", "Potential",
-            "Parameter", "Potential"),
+            "App::PropertyFloat",
+            "Potential",
+            "Parameter",
+            "Potential"
+        ),
         obj.addProperty(
-            "App::PropertyBool", "PotentialEnabled",
-            "Parameter", "Potential Enabled"),
+            "App::PropertyBool",
+            "PotentialEnabled",
+            "Parameter",
+            "Potential Enabled"
+        ),
         obj.addProperty(
-            "App::PropertyBool", "PotentialConstant",
-            "Parameter", "Potential Constant"),
-        obj.addProperty(      # Howil added
-            "App::PropertyBool", "ElectricInfinity",
-            "Parameter", "Electric Infinity")
+            "App::PropertyBool",
+            "PotentialConstant",
+            "Parameter",
+            "Potential Constant"
+        ),
         obj.addProperty(
-            "App::PropertyInteger", "CapacitanceBody",
-            "Parameter", "Capacitance Body")
+            "App::PropertyBool",
+            "ElectricInfinity",
+            "Parameter",
+            "Electric Infinity"
+        )
         obj.addProperty(
-            "App::PropertyBool", "CapacitanceBodyEnabled",
-            "Parameter", "Capacitance Body Enabled")
-        
-
+            "App::PropertyInteger",
+            "CapacitanceBody",
+            "Parameter",
+            "Capacitance Body"
+        )
+        obj.addProperty(
+            "App::PropertyBool",
+            "CapacitanceBodyEnabled",
+            "Parameter",
+            "Capacitance Body Enabled"
+        )
diff --git a/src/Mod/Fem/femsolver/elmer/writer.py b/src/Mod/Fem/femsolver/elmer/writer.py
index a99e6f1056..dd69d6e604 100644
--- a/src/Mod/Fem/femsolver/elmer/writer.py
+++ b/src/Mod/Fem/femsolver/elmer/writer.py
@@ -357,7 +357,7 @@ class Writer(object):
                 for name in obj.References[0][1]:
                     # https://forum.freecadweb.org/viewtopic.php?f=18&t=41488&start=10#p369454  ff
                     if obj.PotentialEnabled:
-                        if hasattr(obj, 'Potential'):
+                        if hasattr(obj, "Potential"):
                             potential = getFromUi(obj.Potential, "V", "M*L^2/(T^3 * I)")
                             self._boundary(name, "Potential", potential)
                     if obj.PotentialConstant:
@@ -365,8 +365,8 @@ class Writer(object):
                     if obj.ElectricInfinity:
                         self._boundary(name, "Electric Infinity BC", True)
                     if obj.CapacitanceBodyEnabled:
-                        if hasattr(obj, 'CapacitanceBody'):
-                            self._boundary(name, "Capacitance Body", obj.CapacitanceBody)        
+                        if hasattr(obj, "CapacitanceBody"):
+                            self._boundary(name, "Capacitance Body", obj.CapacitanceBody)
                 self._handled(obj)
 
     def _handleFluxsolver(self):