diff --git a/Affin.py b/Affin.py
index f986566..5dcd884 100644
--- a/Affin.py
+++ b/Affin.py
@@ -3,6 +3,7 @@
 # Date: 2024-03-11
 # Version: 1.0
 # Do not remove this Attribution if you use this code.
+# Nottify the author if you want to use this code before using it.
 
 def affine_encode(a, b, plain_text):
     alphabet = 'abcdefghijklmnñopqrstuvwxyz'
diff --git a/Cesar.py b/Cesar.py
index 47f64e3..4086d7b 100644
--- a/Cesar.py
+++ b/Cesar.py
@@ -3,6 +3,7 @@
 # Date: 2024-03-11
 # Version: 1.0
 # Do not remove this Attribution if you use this code.
+# Nottify the author if you want to use this code before using it.
 
 def caesar_cipher_encrypt(word, key):
     alphabet = 'abcdefghijklmnñopqrstuvwxyz'
diff --git a/CesarWithKey.py b/CesarWithKey.py
index aa99bc0..e48a8e4 100644
--- a/CesarWithKey.py
+++ b/CesarWithKey.py
@@ -4,6 +4,7 @@
     Date: 2024-03-11
     Version: 1.1
     Do not remove this Attribution if you use this code.
+    Nottify the author if you want to use this code before using it.
 """
 def encrypt(text, key, start):
     text_len = len(text)
diff --git a/Vigenere.py b/Vigenere.py
index 57466cb..e7b8b6b 100644
--- a/Vigenere.py
+++ b/Vigenere.py
@@ -3,6 +3,8 @@
 # Date: 2024-03-12
 # Version: 1.0
 # Do not remove this Attribution if you use this code.
+# Nottify the author if you want to use this code before using it.
+
 def vigenere_encode(message, key):
     encoded_message = ""
     alphabet = "abcdefghijklmnñopqrstuvwxyz"