diff --git a/Gemfile b/Gemfile
index 8fcd22e75..b056a05b8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -185,7 +185,7 @@ gem "typhoeus",           "1.1.2"
 
 gem "gon",                     "6.1.0"
 gem "hamlit",                  "2.8.4"
-gem "mobile_fu",               "1.4.0"
+gem "mobile_fu",               "1.4.0", require: "mobile-fu"
 gem "rails-timeago",           "2.16.0"
 gem "will_paginate",           "3.1.6"