--- a/devtools/testlib.py	Thu Feb 14 15:38:25 2013 +0100
+++ b/devtools/testlib.py	Thu Feb 14 16:01:24 2013 +0100
@@ -1206,7 +1206,7 @@
 #     # XXX broken
 #     from cubicweb.devtools.apptest import TestEnvironment
 #     env = testclass._env = TestEnvironment('data', configcls=testclass.configcls)
-#     for reg in env.vreg.values():
+#     for reg in env.vreg.itervalues():
 #         reg._selected = {}
 #         try:
 #             orig_select_best = reg.__class__.__orig_select_best