whoops, wrong delete syntax

Author: naiyt

lib/secure_headers/railtie.rb

@@ -9,7 +9,7 @@ class Railtie < Rails::Engine
           include ::SecureHeaders
 
           conflicting_headers.each do |header|
-            Rails.application.config.action_dispatch.default_headers.delete[header]
+            Rails.application.config.action_dispatch.default_headers.delete(header)
           end
 
         end