diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 53374949ae..95273ec2fd 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -1,4 +1,3 @@
-require 'erb'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/object/inclusion'