Index: Lib/trace.py
===================================================================
--- Lib/trace.py	(revision 82925)
+++ Lib/trace.py	(working copy)
@@ -257,7 +257,7 @@
         if self.calledfuncs:
             print()
             print("functions called:")
-            for filename, modulename, funcname in sorted(calls.keys()):
+            for filename, modulename, funcname in sorted(self.calledfuncs.keys()):
                 print(("filename: %s, modulename: %s, funcname: %s"
                        % (filename, modulename, funcname)))