diff --git a/lib/gitlab/database.rb b/lib/gitlab/database.rb
index 16308b308b2..4c40e8a528c 100644
--- a/lib/gitlab/database.rb
+++ b/lib/gitlab/database.rb
@@ -128,7 +128,7 @@ module Gitlab
 
       disable_quote = Array(disable_quote).to_set
       tuples = rows.map do |row|
-        row.keys.map do |k|
+        keys.map do |k|
           disable_quote.include?(k) ? row[k] : connection.quote(row[k])
         end
       end