diff --git a/Lib/wave.py b/Lib/wave.py
index b993b40..718e1eb 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -384,7 +384,8 @@
     def getcompname(self):
         return self._compname
 
-    def setparams(self, (nchannels, sampwidth, framerate, nframes, comptype, compname)):
+    def setparams(self, params):
+        nchannels, sampwidth, framerate, nframes, comptype, compname = params
         if self._datawritten:
             raise Error, 'cannot change parameters after starting to write'
         self.setnchannels(nchannels)