diff --git a/config/mail_room.yml b/config/mail_room.yml
index 761a32adb9e..7cab24b295e 100644
--- a/config/mail_room.yml
+++ b/config/mail_room.yml
@@ -2,7 +2,7 @@
 <%
 require "yaml"
 require "json"
-require_relative "lib/gitlab/redis"
+require_relative "lib/gitlab/redis" unless defined?(Gitlab::Redis)
 
 rails_env = ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development"