Index: Objects/exceptions.c
===================================================================
--- Objects/exceptions.c	(revision 76759)
+++ Objects/exceptions.c	(working copy)
@@ -130,7 +130,7 @@
         out = PyObject_Unicode(PyTuple_GET_ITEM(self->args, 0));
         break;
     default:
-        out = PyObject_Unicode(self->args);
+        out = PyObject_Unicode(PyObject_Str(self));
         break;
     }