diff --git a/src/Mod/PartDesign/App/FeatureHelix.h b/src/Mod/PartDesign/App/FeatureHelix.h
index 23cf82b47e..7e9823a0ef 100644
--- a/src/Mod/PartDesign/App/FeatureHelix.h
+++ b/src/Mod/PartDesign/App/FeatureHelix.h
@@ -90,7 +90,7 @@ protected:
 
     // handle changed property
     virtual void handleChangedPropertyType(Base::XMLReader& reader, const char* TypeName, App::Property* prop);
-    static const App::PropertyFloatConstraint::Constraints Helix::floatTurns;
+    static const App::PropertyFloatConstraint::Constraints floatTurns;
     static const App::PropertyAngle::Constraints floatAngle;
 
 private: