diff --git a/draft-ietf-sframe-enc.md b/draft-ietf-sframe-enc.md
index 5ca5144..6cb2336 100644
--- a/draft-ietf-sframe-enc.md
+++ b/draft-ietf-sframe-enc.md
@@ -512,7 +512,7 @@ the encrypted frame, and the CTR field is used to construct the nonce.
 
 ~~~~~
 def decrypt(metadata, sframe_ciphertext):
-  KID, CTR, ciphertext = parse_ciphertext(sframe_ciphertext)
+  KID, CTR, header, ciphertext = parse_ciphertext(sframe_ciphertext)
 
   sframe_key, sframe_salt = key_store[KID]