diff --git a/src/Mod/Arch/ArchPipe.py b/src/Mod/Arch/ArchPipe.py
index 7a2e96547d..50b98f344b 100644
--- a/src/Mod/Arch/ArchPipe.py
+++ b/src/Mod/Arch/ArchPipe.py
@@ -1,4 +1,4 @@
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 
 #***************************************************************************
 #*                                                                         *
@@ -258,10 +258,10 @@ class _ArchPipe(ArchComponent.Component):
             if len(obj.Profile.Shape.Wires) != 1:
                 FreeCAD.Console.PrintError(translate("Arch","Too many wires in the profile\n"))
                 return
-            if not obj.Base.Profile.Wires[0].isClosed():
+            if not obj.Profile.Shape.Wires[0].isClosed():
                 FreeCAD.Console.PrintError(translate("Arch","The profile is not closed\n"))
                 return
-            p = obj.Base.Profile.Wires[0]
+            p = obj.Profile.Shape.Wires[0]
         else:
             if obj.Diameter.Value == 0:
                 return