diff --git a/standards/application/inbox.md b/standards/application/inbox.md
index 6168cfa..0a9e295 100644
--- a/standards/application/inbox.md
+++ b/standards/application/inbox.md
@@ -134,7 +134,7 @@ message InboxV1Frame {
 message EncryptedPayload {
 
     oneof encryption {
-		NoiseKN noise_KN = 3;
+		NoiseKN noise_KN = 1;
     }
    
     message NoiseKN {