diff --git a/src/codewars/kata_cipher_helper.py b/src/codewars/kata_cipher_helper.py
index 453b679..3d53b5d 100644
--- a/src/codewars/kata_cipher_helper.py
+++ b/src/codewars/kata_cipher_helper.py
@@ -15,10 +15,9 @@ class VigenereCipher(object):
 
                 pos = (text_pos + key_pos) % len(self.alphabet)
                 encoded.append(self.alphabet[pos])
-
-                idx_key += 1
             else:
                 encoded.append(char)
+            idx_key += 1
 
         return "".join(encoded)
 
@@ -34,9 +33,8 @@ class VigenereCipher(object):
 
                 pos = (text_pos - key_pos) % len(self.alphabet)
                 decoded.append(self.alphabet[pos])
-
-                idx_key += 1
             else:
                 decoded.append(char)
+            idx_key += 1
 
         return "".join(decoded)