diff --git a/master.cfg b/master.cfg
index deb5bd2..f383fd2 100644
--- a/master.cfg
+++ b/master.cfg
@@ -790,11 +790,13 @@ class ComputeTryBuildCount (steps.BuildStep):
             count = 0
         else:
             builder = self.getProperty ('buildername')
+            rev = self.getProperty ('got_revision')
+            branch = self.getProperty ('branch')
             db_file = os.path.join (get_web_base (), builder, builder + '.db')
 
             con = sqlite3.connect (db_file)
             c = con.cursor ()
-            c.execute ('SELECT COUNT(*) FROM logs WHERE commitid = "%s" AND branch = "%s" AND trysched = 1' % (sourcestamp.revision, branch))
+            c.execute ('SELECT COUNT(*) FROM logs WHERE commitid = "%s" AND branch = "%s" AND trysched = 1' % (rev, branch))
             count = c.fetchone ()[0]
             con.close ()