diff --git a/src/Mod/Arch/ArchComponent.py b/src/Mod/Arch/ArchComponent.py
index 181c9bec64..f798171dbb 100644
--- a/src/Mod/Arch/ArchComponent.py
+++ b/src/Mod/Arch/ArchComponent.py
@@ -317,8 +317,7 @@ class Component(ArchIFC.IfcProduct):
         return siblings
 
     def getExtrusionData(self,obj):
-
-        "returns (shape,extrusion vector or path,placement) or None"
+        """returns (shape,extrusion vector or path,placement) or None"""
         if hasattr(obj,"CloneOf"):
             if obj.CloneOf:
                 if hasattr(obj.CloneOf,"Proxy"):