diff --git a/app/helpers/orbit_helper.rb b/app/helpers/orbit_helper.rb
index 9196527..2b87dfc 100644
--- a/app/helpers/orbit_helper.rb
+++ b/app/helpers/orbit_helper.rb
@@ -168,7 +168,9 @@ module OrbitHelper
     if @current_user.is_admin? or @current_user.is_manager?(@module_app)
       return true
     else
-      return @current_user.approved_categories.include?cat rescue false
+      category = Category.find(cat) rescue nil
+      return false if category.nil?
+      return @current_user.approved_categories.include?category rescue false
     end
   end