diff --git a/buildbot/status/tinderbox.py b/buildbot/status/tinderbox.py
index <HASH>..<HASH> 100644
--- a/buildbot/status/tinderbox.py
+++ b/buildbot/status/tinderbox.py
@@ -172,7 +172,7 @@ class TinderboxMailNotifier(mail.MailNotifier):
             text += "%s build: %s\n" % (t, self.columnName)
         elif isinstance(self.columnName, WithProperties):
             # interpolate the WithProperties instance, use that
-            text += "%s build: %s\n" % (t, self.columnName.render(build))
+            text += "%s build: %s\n" % (t, build.getProperties().render(self.columnName))
         else:
             raise Exception("columnName is an unhandled value")
         text += "%s errorparser: %s\n" % (t, self.errorparser)
axel-tinderbox-fix.patch

Fix by Axel Hecht <l<I><EMAIL>> to a regression in tinderbox