diff --git a/netbox/netbox/settings.py b/netbox/netbox/settings.py
index 0157e2560..d6fd90c93 100644
--- a/netbox/netbox/settings.py
+++ b/netbox/netbox/settings.py
@@ -346,7 +346,7 @@ else:
     REDIS_CACHE_CON_STRING = 'redis://'
 
 if REDIS_PASSWORD:
-    REDIS_CACHE_CON_STRING = '{}{}@'.format(REDIS_CACHE_CON_STRING, REDIS_PASSWORD)
+    REDIS_CACHE_CON_STRING = '{}:{}@'.format(REDIS_CACHE_CON_STRING, REDIS_PASSWORD)
 
 REDIS_CACHE_CON_STRING = '{}{}:{}/{}'.format(REDIS_CACHE_CON_STRING, REDIS_HOST, REDIS_PORT, REDIS_CACHE_DATABASE)