diff --git a/app/services/dunlop/ability.rb b/app/services/dunlop/ability.rb
index fc3a726..01b03c4 100644
--- a/app/services/dunlop/ability.rb
+++ b/app/services/dunlop/ability.rb
@@ -71,7 +71,7 @@ module Dunlop::Ability
     return unless role_name =~ /\w+-\w+-[\w:\/-]+/
     ability, type, class_name = role_name.split('-', 3)
     case type
-      when 'app', 'adapter'
+      when 'app', 'adapter', 'engine'
         type = 'class'
         class_name = "#{class_name.camelize}::Engine"
       when 'model'