diff --git a/sickbeard/versionChecker.py b/sickbeard/versionChecker.py
index f9edff143763729aabdb3e2794dd3c4ac79c531b..f7df0a474f5fe2fd284acfd2c7459b6179d453dd 100644
--- a/sickbeard/versionChecker.py
+++ b/sickbeard/versionChecker.py
@@ -108,6 +108,7 @@ class WindowsUpdateManager(UpdateManager):
 
     def __init__(self):
         self._cur_version = None
+        self._cur_commit_hash = None
         self._newest_version = None
 
         self.gc_url = 'http://code.google.com/p/sickbeard/downloads/list'