diff -r 2057d5fc951c Lib/zipfile.py
--- a/Lib/zipfile.py	Sun May 17 18:59:27 2009 +0200
+++ b/Lib/zipfile.py	Mon May 18 00:52:25 2009 -0400
@@ -970,8 +970,11 @@
         if upperdirs and not os.path.exists(upperdirs):
             os.makedirs(upperdirs)
 
-        if member.filename[-1] == '/':
+        if member.filename[-1] == '/' and not os.path.exists(targetpath):
             os.mkdir(targetpath)
+            return targetpath
+
+        elif member.filename[-1] == '/':
             return targetpath
 
         source = self.open(member, pwd=pwd)