diff --git a/app/models/user.rb b/app/models/user.rb
index 2a35b23f821..76aef38b38a 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -373,7 +373,7 @@ class User < ActiveRecord::Base
   end
 
   def accessible_deploy_keys
-    DeployKey.in_projects(self.authorized_projects).uniq
+    DeployKey.in_projects(self.authorized_projects.pluck(:id)).uniq
   end
 
   def created_by