diff --git a/cms/envs/common.py b/cms/envs/common.py
index ade7479d61..8e2788a86a 100644
--- a/cms/envs/common.py
+++ b/cms/envs/common.py
@@ -157,6 +157,7 @@ MIDDLEWARE_CLASSES = (
     'cache_toolbox.middleware.CacheBackedAuthenticationMiddleware',
     'student.middleware.UserStandingMiddleware',
     'contentserver.middleware.StaticContentServer',
+    'crum.CurrentRequestUserMiddleware',
 
     'django.contrib.messages.middleware.MessageMiddleware',
     'track.middleware.TrackMiddleware',