diff --git a/master.cfg b/master.cfg
index 855dbe9..10b9a4a 100644
--- a/master.cfg
+++ b/master.cfg
@@ -391,7 +391,7 @@ class MyMailNotifier (mail.MailNotifier):
     """Extend the regular MailNotifier class in order to filter e-mails by
 scheduler."""
     def isMailNeeded (self, build):
-        if Property ('scheduler') != 'racy':
+        if build.properties.getProperty ('scheduler') != 'racy':
             return mail.MailNotifier.isMailNeeded (self, build)
         else:
             return False
@@ -574,10 +574,10 @@ class CleanupBreakageLockfile (ShellCommand):
 
 
 def scheduler_is_racy (step):
-    return Property ('scheduler') == 'racy'
+    return step.getProperty ('scheduler') == 'racy'
 
 def scheduler_is_not_racy (step):
-    return Property ('scheduler') != 'racy'
+    return step.getProperty ('scheduler') != 'racy'
 
 #######################
 #### Build Factory ####