diff --git a/src/Mod/Path/PathScripts/PathSetupSheetOpPrototype.py b/src/Mod/Path/PathScripts/PathSetupSheetOpPrototype.py
index 731e910fdd..20dd8d777d 100644
--- a/src/Mod/Path/PathScripts/PathSetupSheetOpPrototype.py
+++ b/src/Mod/Path/PathScripts/PathSetupSheetOpPrototype.py
@@ -141,6 +141,7 @@ class OpPrototype(object):
             'App::PropertyDistance': PropertyDistance,
             'App::PropertyEnumeration': PropertyEnumeration,
             'App::PropertyFloat': PropertyFloat,
+            'App::PropertyFloatConstraint': Property,
             'App::PropertyInteger': PropertyInteger,
             'App::PropertyLength': PropertyLength,
             'App::PropertyLink': Property,
diff --git a/src/Mod/Path/PathScripts/PathSurface.py b/src/Mod/Path/PathScripts/PathSurface.py
index 3ddda100cd..7bc2002025 100644
--- a/src/Mod/Path/PathScripts/PathSurface.py
+++ b/src/Mod/Path/PathScripts/PathSurface.py
@@ -81,7 +81,8 @@ class ObjectSurface(PathOp.ObjectOp):
         obj.Algorithm = ['OCL Dropcutter', 'OCL Waterline']
         obj.SampleInterval = (0.04, 0.01, 1.0, 0.01)
 
-        self.setEditorProperties(obj)
+        if not hasattr(obj, 'DoNotSetDefaultValues'):
+            self.setEditorProperties(obj)
 
     def setEditorProperties(self, obj):
         if obj.Algorithm == 'OCL Dropcutter':