diff --git a/app/models/issue.rb b/app/models/issue.rb
index 48834a504..c7350e26e 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -118,7 +118,7 @@ class Issue < ApplicationRecord
     LEFT JOIN users u ON assigner.assigner_id = u.id")
   }
   
-  scope :ordered_by_assigner(sort_direction), -> {
+  scope :ordered_by_assigner, -> (sort_direction) {
     order("CASE WHEN u.id IS NULL THEN 1 ELSE 0 END #{sort_direction}")
     .order("COALESCE(u.nickname, u.login) DESC")
   }