diff --git a/config/initializers/10-patches.rb b/config/initializers/10-patches.rb
index adac86583..4869b3b83 100644
--- a/config/initializers/10-patches.rb
+++ b/config/initializers/10-patches.rb
@@ -148,8 +148,10 @@ module ActionView
       super values
     end
   end)
+end
 
-  Rendering.prepend(Module.new do
+module ActionController
+  Base.prepend(Module.new do
     def rendered_format
       if lookup_context.formats.first == :api
         return request.format