diff --git a/lib/doorkeeper/oauth/authorization_code_request.rb b/lib/doorkeeper/oauth/authorization_code_request.rb
index <HASH>..<HASH> 100644
--- a/lib/doorkeeper/oauth/authorization_code_request.rb
+++ b/lib/doorkeeper/oauth/authorization_code_request.rb
@@ -2,7 +2,6 @@ module Doorkeeper
   module OAuth
     class AuthorizationCodeRequest
       include Doorkeeper::Validations
-      include Doorkeeper::OAuth::Helpers
 
       validate :attributes,   error: :invalid_request
       validate :client,       error: :invalid_client
Doorkeeper::OAuth::Helpers is no longer necessary for find_or_create.