Index: lib2to3/fixes/fix_buffer.py
===================================================================
--- lib2to3/fixes/fix_buffer.py	(revision 73162)
+++ lib2to3/fixes/fix_buffer.py	(working copy)
@@ -13,7 +13,7 @@
     explicit = True # The user must ask for this fixer
 
     PATTERN = """
-              power< name='buffer' trailer< '(' [any] ')' > >
+              power< name='buffer' trailer< '(' [any] ')' > rest=any* >
               """
 
     def transform(self, node, results):