diff --git a/talGettext.py b/talGettext.py
index 8d502098..8320b585 100755
--- a/talGettext.py
+++ b/talGettext.py
@@ -44,7 +44,7 @@ else:
     # Python < 2.3.
     # Directly copied from Python2.3 os.walk function, but without yield.
 
-    def osWalk(top, topdown=True, onerror=None):
+    def osWalk(top, topdown=1, onerror=None):
         """Directory tree generator."""
 
         paths = []