diff --git a/app/models/group_order_article.rb b/app/models/group_order_article.rb
index 83693e10..74bb6210 100644
--- a/app/models/group_order_article.rb
+++ b/app/models/group_order_article.rb
@@ -190,7 +190,7 @@ class GroupOrderArticle < ActiveRecord::Base
 
   # Check if the result deviates from the result_computed
   def result_manually_changed?
-    result != result_computed
+    result != result_computed unless result.nil?
   end
 end