diff --git a/app/models/ability.rb b/app/models/ability.rb
index 08e0f2fece79b0492a4d220eeb57e0de3b8afdef..a345631b477e8a5697ffb5b1a5d6692e580e5a9c 100644
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -8,7 +8,7 @@ class Ability
   end
 
   def initialize(user)
-    user ||= User.new # guest user (not logged in)
+    @user ||= User.new # guest user (not logged in)
   end
 
   protected