diff --git a/actionpack/lib/action_view/test_case.rb b/actionpack/lib/action_view/test_case.rb
index ff35fb7df478b7b7a7dfa185154470281e65941a..32fd8c5e21a2b360e9bd40e9bb92bd2a7beae60c 100644
--- a/actionpack/lib/action_view/test_case.rb
+++ b/actionpack/lib/action_view/test_case.rb
@@ -127,6 +127,7 @@ def response_from_page_or_rjs
 
       def say_no_to_protect_against_forgery!
         _helpers.module_eval do
+          remove_method :protect_against_forgery? if method_defined?(:protect_against_forgery?)
           def protect_against_forgery?
             false
           end