diff --git a/settings.coffee b/settings.coffee
index 475e7ca8f2..684bf18d53 100644
--- a/settings.coffee
+++ b/settings.coffee
@@ -54,7 +54,7 @@ settings =
 		web: redisConfig =
 			host: process.env["SHARELATEX_REDIS_HOST"] or "dockerhost"
 			port: process.env["SHARELATEX_REDIS_PORT"] or "6379"
-			password: process.env["SHARELATEX_REDIS_PASS"] or ""
+			password: process.env["SHARELATEX_REDIS_PASS"] or undefined
 			key_schema:
 				# document-updater
 				blockingKey: ({doc_id}) -> "Blocking:#{doc_id}"