diff --git a/actionpack/lib/action_controller/metal/mime_responds.rb b/actionpack/lib/action_controller/metal/mime_responds.rb
index b47abb8b8c22521e61886edca93ee5e5ac52bd93..ed9d4f589b687e551539c11c1074d08a993d87d2 100644
--- a/actionpack/lib/action_controller/metal/mime_responds.rb
+++ b/actionpack/lib/action_controller/metal/mime_responds.rb
@@ -430,7 +430,7 @@ class Collector
 
       def initialize(mimes)
         @responses = {}
-        mimes.each { |mime| send(mime) }
+        mimes.each { |mime| @responses["Mime::#{mime.upcase}".constantize] = nil }
       end
 
       def any(*args, &block)