diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb
index 76f380e583..a0d1064094 100644
--- a/actionpack/lib/action_controller/metal/http_authentication.rb
+++ b/actionpack/lib/action_controller/metal/http_authentication.rb
@@ -408,8 +408,7 @@ def request_http_token_authentication(realm = "Application")
       #   ActionController::Base instance for the current request.
       #
       # [login_procedure]
-      #   Proc to call if a token is present. The Proc should take 2
-      #   arguments:
+      #   Proc to call if a token is present. The Proc should take two arguments:
       #
       #     authenticate(controller) { |token, options| ... }
       #