diff --git a/Lib/lib2to3/pgen2/tokenize.py b/Lib/lib2to3/pgen2/tokenize.py
index 163c561..e0f45f9 100644
--- a/Lib/lib2to3/pgen2/tokenize.py
+++ b/Lib/lib2to3/pgen2/tokenize.py
@@ -144,7 +144,9 @@
 
 class StopTokenizing(Exception): pass
 
-def printtoken(type, token, (srow, scol), (erow, ecol), line): # for testing
+def printtoken(type, token, start, end, line): # for testing
+    (srow, scol) = start
+    (erow, ecol) = end
     print "%d,%d-%d,%d:\t%s\t%s" % \
         (srow, scol, erow, ecol, tok_name[type], repr(token))