diff --git a/master.cfg b/master.cfg
index d90a60b..deb5bd2 100644
--- a/master.cfg
+++ b/master.cfg
@@ -798,7 +798,9 @@ class ComputeTryBuildCount (steps.BuildStep):
             count = c.fetchone ()[0]
             con.close ()
 
-        self.setproperty ('try_count', count, 'ComputeTryBuildCount')
+        self.setProperty ('try_count', count, 'ComputeTryBuildCount')
+
+        return 0
 
 
 def scheduler_is_racy (step):