diff --git a/lib/extensions/active_record/reflection.rb b/lib/extensions/active_record/reflection.rb
index dd9a113..6b5c942 100644
--- a/lib/extensions/active_record/reflection.rb
+++ b/lib/extensions/active_record/reflection.rb
@@ -1,20 +1,12 @@
-
 # on STI classes tike Article and Profile, plugins' extensions
 # on associations should be reflected on descendants
 module ActiveRecord
   module Reflection
-
-    class << self
-
-      def add_reflection_with_descendants(ar, name, reflection)
-        self.add_reflection_without_descendants ar, name, reflection
-        ar.descendants.each do |k|
-          k._reflections.merge!(name.to_s => reflection)
-        end if ar.base_class == ar
+    def self.add_reflection(ar, name, reflection)
+      (ar.descendants << ar).each do |klass|
+        klass.clear_reflections_cache
+        klass._reflections = klass._reflections.merge(name.to_s => reflection)
       end
-
-      alias_method_chain :add_reflection, :descendants
-
     end
   end
 end
--
libgit2 0.21.2