diff --git a/EPAYMENT/Providers/AssecoPaymentProvider.cs b/EPAYMENT/Providers/AssecoPaymentProvider.cs
index 7818b5f..8b41477 100644
--- a/EPAYMENT/Providers/AssecoPaymentProvider.cs
+++ b/EPAYMENT/Providers/AssecoPaymentProvider.cs
@@ -105,7 +105,7 @@ public PaymentResult GetPaymentResult(IFormCollection form)
 
             var response = form["Response"];
             //mdstatus 1,2,3 veya 4 olursa 3D doğrulama geçildi anlamına geliyor
-            if (!mdStatus.Equals("1") || !mdStatus.Equals("2") || !mdStatus.Equals("3") || !mdStatus.Equals("4"))
+            if (!mdStatus.Equals("1") && !mdStatus.Equals("2") && !mdStatus.Equals("3") && !mdStatus.Equals("4"))
             {
                 paymentResult.ErrorMessage = $"{response} - {form["mdErrorMsg"]}";
                 paymentResult.ErrorCode = form["ProcReturnCode"];