Using ActiveSupport#on_load instead of send :include to boot.

lib/action_controller/parameters.rb

@@ -29,7 +29,7 @@ def initialize(params)
   class Parameters < ActiveSupport::HashWithIndifferentAccess
     attr_accessor :permitted
     alias :permitted? :permitted
-    
+
     cattr_accessor :action_on_unpermitted_parameters, :instance_accessor => false
 
     # Never raise an UnpermittedParameters exception because of these params
@@ -211,23 +211,23 @@ def each_element(value)
         end
       end
 
-      def unpermitted_parameters!(params)  
+      def unpermitted_parameters!(params)
         return unless self.class.action_on_unpermitted_parameters
-        
+
         unpermitted_keys = unpermitted_keys(params)
 
-        if unpermitted_keys.any?  
-          case self.class.action_on_unpermitted_parameters  
+        if unpermitted_keys.any?
+          case self.class.action_on_unpermitted_parameters
           when :log
             name = "unpermitted_parameters.action_controller"
             ActiveSupport::Notifications.instrument(name, :keys => unpermitted_keys)
-          when :raise  
-            raise ActionController::UnpermittedParameters.new(unpermitted_keys)  
-          end  
-        end  
-      end  
-  
-      def unpermitted_keys(params)  
+          when :raise
+            raise ActionController::UnpermittedParameters.new(unpermitted_keys)
+          end
+        end
+      end
+
+      def unpermitted_keys(params)
         self.keys - params.keys - NEVER_UNPERMITTED_PARAMS
       end
   end
@@ -251,4 +251,4 @@ def params=(val)
   end
 end
 
-ActionController::Base.send :include, ActionController::StrongParameters
+ActiveSupport.on_load(:action_controller) { include ActionController::StrongParameters }