diff --git a/src/Mod/Fem/femobjects/_FemConstraintBodyHeatSource.py b/src/Mod/Fem/femobjects/_FemConstraintBodyHeatSource.py
index f8295e07a0..35804d082f 100644
--- a/src/Mod/Fem/femobjects/_FemConstraintBodyHeatSource.py
+++ b/src/Mod/Fem/femobjects/_FemConstraintBodyHeatSource.py
@@ -37,5 +37,8 @@ class Proxy(FemConstraint.Proxy):
     def __init__(self, obj):
         super(Proxy, self).__init__(obj)
         obj.addProperty(
-            "App::PropertyFloat", "HeatSource",
-            "Base", "Body heat source")
+            "App::PropertyFloat"
+            "HeatSource",
+            "Base",
+            "Body heat source"
+        )
diff --git a/src/Mod/Fem/femobjects/_FemConstraintFlowVelocity.py b/src/Mod/Fem/femobjects/_FemConstraintFlowVelocity.py
index b21f0d291e..fc37ff588e 100644
--- a/src/Mod/Fem/femobjects/_FemConstraintFlowVelocity.py
+++ b/src/Mod/Fem/femobjects/_FemConstraintFlowVelocity.py
@@ -37,23 +37,44 @@ class Proxy(FemConstraint.Proxy):
     def __init__(self, obj):
         super(Proxy, self).__init__(obj)
         obj.addProperty(
-            "App::PropertyFloat", "VelocityX",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityX",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityXEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityXEnabled",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyFloat", "VelocityY",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityY",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityYEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityYEnabled",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyFloat", "VelocityZ",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityZ",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityZEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityZEnabled",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "NormalToBoundary",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "NormalToBoundary",
+            "Parameter",
+            "Body heat flux"
+        )
diff --git a/src/Mod/Fem/femobjects/_FemConstraintInitialFlowVelocity.py b/src/Mod/Fem/femobjects/_FemConstraintInitialFlowVelocity.py
index 9a2874f725..874a54cd27 100644
--- a/src/Mod/Fem/femobjects/_FemConstraintInitialFlowVelocity.py
+++ b/src/Mod/Fem/femobjects/_FemConstraintInitialFlowVelocity.py
@@ -37,20 +37,38 @@ class Proxy(FemConstraint.Proxy):
     def __init__(self, obj):
         super(Proxy, self).__init__(obj)
         obj.addProperty(
-            "App::PropertyFloat", "VelocityX",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityX",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityXEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityXEnabled",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyFloat", "VelocityY",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityY",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityYEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityYEnabled",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyFloat", "VelocityZ",
-            "Parameter", "Body heat flux")
+            "App::PropertyFloat",
+            "VelocityZ",
+            "Parameter",
+            "Body heat flux"
+        )
         obj.addProperty(
-            "App::PropertyBool", "VelocityZEnabled",
-            "Parameter", "Body heat flux")
+            "App::PropertyBool",
+            "VelocityZEnabled",
+            "Parameter",
+            "Body heat flux"
+        )