diff --git a/CipherTest.java b/CipherTest.java
index 2f6ac6b..ddc951f 100644
--- a/CipherTest.java
+++ b/CipherTest.java
@@ -16,6 +16,10 @@ public static void main(String[] args)
         System.out.println("Decrypted Text: " + text1_decrypted);
         System.out.println();
 
+        if (!text1.equals(text1_decrypted)) {
+         System.out.println("Hata: Decryption işlemi başarısız!");
+     }
+
         // text2 is the message to be decrypted, something meaningful should print if Cipher is working correctly
         String text2 = "iu, git pldp hehocplvgk vj tiouvgk, plvj jliqay sduh jhgjh. ldeh d kiiy phos!";
         System.out.println(cipher.decrypt(text2));