1 files changed, 7 insertions, 6 deletions
diff --git a/actionpack/lib/action_controller/metal/params_wrapper.rb b/actionpack/lib/action_controller/metal/params_wrapper.rb
index 9f79d796cc..a678377d4f 100644
--- a/actionpack/lib/action_controller/metal/params_wrapper.rb
+++ b/actionpack/lib/action_controller/metal/params_wrapper.rb
@@ -112,14 +112,15 @@ module ActionController
               else
                 self.include = m.attribute_names
               end
-            end
-            if m.respond_to?(:nested_attributes_options) && m.nested_attributes_options.any?
-              nested_attributes_names = self.nested_attributes_options.keys.map do |key| 
-                key.to_s.concat('_attributes').to_sym
+
+              if m.respond_to?(:nested_attributes_options) && m.nested_attributes_options.keys.any?
+                self.include += m.nested_attributes_options.keys.map do |key|
+                  key.to_s.concat("_attributes")
+                end
               end
-              self.include += nested_attributes_names
-            end
 
+              self.include
+            end
           end
         end
       end