diff --git a/app/models/orbit_observer.rb b/app/models/orbit_observer.rb
index 5bf400e..92e1279 100644
--- a/app/models/orbit_observer.rb
+++ b/app/models/orbit_observer.rb
@@ -20,7 +20,7 @@ class OrbitObserver < Mongoid::Observer
 		when 'Category'
 			Rails.cache.delete_matched( /#{ document.module_app.key }/ )
 		else
-			Rails.cache.delete_matched( /#{model_module_hash[document.name.underscore.to_sym]}/ )
+			Rails.cache.delete_matched( /#{model_module_hash[document.class.name.underscore.to_sym]}/ )
 		end
 	end
 end
\ No newline at end of file