1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/routing/inspector.rb b/actionpack/lib/action_dispatch/routing/inspector.rb
index cba49d1a0b..413e524ef6 100644
--- a/actionpack/lib/action_dispatch/routing/inspector.rb
+++ b/actionpack/lib/action_dispatch/routing/inspector.rb
@@ -83,7 +83,7 @@ module ActionDispatch
       private
         def normalize_filter(filter)
           if filter[:controller]
-            { controller: /#{filter[:controller].downcase.sub(/_?controller\z/, '').sub('::', '/')}/ }
+            { controller: /#{filter[:controller].underscore.sub(/_?controller\z/, "")}/ }
           elsif filter[:grep]
             { controller: /#{filter[:grep]}/, action: /#{filter[:grep]}/,
               verb: /#{filter[:grep]}/, name: /#{filter[:grep]}/, path: /#{filter[:grep]}/ }