diff --git a/19.md b/19.md
index 9d73458..91afaf7 100644
--- a/19.md
+++ b/19.md
@@ -66,3 +66,4 @@ These possible standardized `TLV` types are indicated here:
 ## Notes
 
 - `npub` keys MUST NOT be used in NIP-01 events or in NIP-05 JSON responses, only the hex format is supported there.
+- When decoding a bech32-formatted string, TLVs that are not recognized or supported should be ignored, rather than causing an error.