diff --git a/rad/settings.py b/rad/settings.py
index 904250a0..df9116dd 100644
--- a/rad/settings.py
+++ b/rad/settings.py
@@ -104,7 +104,7 @@ MIDDLEWARE = [
 ]
 
 if not DEBUG:
-    MIDDLEWARE = MIDDLEWARE.append(
+    MIDDLEWARE.append(
     'rad.middleware.coep.COEPMiddleware'
     )