diff --git a/core/lib/rules.py b/core/lib/rules.py
index f59cd1b..0c81a6f 100644
--- a/core/lib/rules.py
+++ b/core/lib/rules.py
@@ -159,6 +159,8 @@ class NotificationRuleData(object):
         Get a match result for an index.
         """
         if self.object.match is None:
+            self.object.match = {}
+            self.object.save()
             return None
         if not isinstance(self.object.match, dict):
             return None