diff -r d62fb3e9797d -r 9efbb54f9cac selectors.py
--- a/selectors.py	Wed Feb 18 15:02:10 2009 +0100
+++ b/selectors.py	Wed Feb 18 15:15:58 2009 +0100
@@ -561,7 +561,7 @@
     """
     
     @lltrace
-    def __call__(cls, req, *args, **kwargs):
+    def __call__(self, cls, req, *args, **kwargs):
         try:
             etype = req.form['etype']
         except KeyError: