diff --git a/server/AyaNova/biz/WorkOrderBiz.cs b/server/AyaNova/biz/WorkOrderBiz.cs
index b7fe5bf4..7bf8a836 100644
--- a/server/AyaNova/biz/WorkOrderBiz.cs
+++ b/server/AyaNova/biz/WorkOrderBiz.cs
@@ -4385,7 +4385,7 @@ namespace AyaNova.Biz
                         }
                     }
                     //SERIALS
-                    if (newObj.Serials != oldObj.Serials)
+                    else if (newObj.Serials != oldObj.Serials)
                     {
                         //NOTE: zero quantity is considered to be a placeholder and no serials will be consumed (hence not returned either)