diff --git a/test/test.py b/test/test.py
index 1bdb947b2..a6c0449bf 100755
--- a/test/test.py
+++ b/test/test.py
@@ -217,7 +217,7 @@ class PluginTestCase(unittest.TestCase):
 
     def assertNoResponse(self, query, timeout=None):
         m = self._feedMsg(query, timeout)
-        self.failIf(m, 'Unexpected response: %s' % msg.args[1])
+        self.failIf(m, 'Unexpected response: %r' % m)
         
     def assertResponse(self, query, expectedResponse):
         m = self._feedMsg(query)