diff --git a/lib/validates_timeliness/orm/active_record.rb b/lib/validates_timeliness/orm/active_record.rb
index 749a3ca..00f2bbb 100644
--- a/lib/validates_timeliness/orm/active_record.rb
+++ b/lib/validates_timeliness/orm/active_record.rb
@@ -18,9 +18,10 @@ module ValidatesTimeliness
 
       module ClassMethods
         def define_attribute_methods
-          super
-          use_before_type_cast = ValidatesTimeliness::ORM::ActiveRecord.use_plugin_cache?
-          define_timeliness_methods use_before_type_cast
+          super.tap do |attribute_methods_generated|
+            use_before_type_cast = ValidatesTimeliness::ORM::ActiveRecord.use_plugin_cache?
+            define_timeliness_methods use_before_type_cast
+          end
         end
 
         def define_timeliness_methods(before_type_cast=false)
diff --git a/spec/validates_timeliness/orm/active_record_spec.rb b/spec/validates_timeliness/orm/active_record_spec.rb
index 8b72cc5..1ee257c 100644
--- a/spec/validates_timeliness/orm/active_record_spec.rb
+++ b/spec/validates_timeliness/orm/active_record_spec.rb
@@ -119,4 +119,10 @@ describe ValidatesTimeliness, 'ActiveRecord' do
     end
 
   end
+
+  context "define_attribute_methods" do
+    it "returns a falsy value if the attribute methods have already been generated" do
+      Employee.define_attribute_methods.should be_false
+    end
+  end
 end