diff --git a/recipes/middleware.py b/recipes/middleware.py
index f0340c19a..662d61d8a 100644
--- a/recipes/middleware.py
+++ b/recipes/middleware.py
@@ -1,4 +1,5 @@
 from django.contrib.auth.middleware import RemoteUserMiddleware
+from os import getenv
 
 class CustomRemoteUser(RemoteUserMiddleware):
-    header = getenv('PROXY_HEADER', 'HTTP_REMOTE_USER')
\ No newline at end of file
+    header = getenv('PROXY_HEADER', 'HTTP_REMOTE_USER')