diff --git a/lms/envs/common.py b/lms/envs/common.py
index 5376590e1f..21b74f6406 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -221,6 +221,7 @@ MODULESTORE = {
         }
     }
 }
+CONTENTSTORE = None
 
 ############################ SIGNAL HANDLERS ################################
 # This is imported to register the exception signal handling that logs exceptions