diff --git a/buildbot/master.cfg b/buildbot/master.cfg
index 4c208696..9a8e0e7f 100644
--- a/buildbot/master.cfg
+++ b/buildbot/master.cfg
@@ -36,7 +36,7 @@ c['slaves'] = [ #BuildSlave("osx_cocoa-py27", bbpasswd.PASSWD1,
                 
                 BuildSlave("win7-py27", bbpasswd.PASSWD1,
                            notify_on_missing='robin@alldunn.com',
-                           max_builds=2),
+                           max_builds=1),
                 
                 BuildSlave("ubuntu-x64_86-py27", bbpasswd.PASSWD1,
                            notify_on_missing='robin@alldunn.com',