diff --git a/DressAtelierBusinessLogic/BusinessLogic/OrderLogic.cs b/DressAtelierBusinessLogic/BusinessLogic/OrderLogic.cs
index adba337..b98a506 100644
--- a/DressAtelierBusinessLogic/BusinessLogic/OrderLogic.cs
+++ b/DressAtelierBusinessLogic/BusinessLogic/OrderLogic.cs
@@ -155,7 +155,7 @@ namespace DressAtelierBusinessLogic.BusinessLogic
                 ID = model.ID
             });
 
-            if (element != null && element.ID == model.ID)
+            if (element != null && element.ID != model.ID)
             {
                 throw new InvalidOperationException("Order with such name already exists.");
             }