diff --git a/README.md b/README.md
index c6451be..4070210 100644
--- a/README.md
+++ b/README.md
@@ -91,6 +91,7 @@ const pub2 = secp256k1.getPublicKey(privHex);
 #### ECDSA public key recovery & extra entropy
 
 ```ts
+// const sig = secp256k1.Signature.fromCompact(sigHex); // or .fromDER(sigDERHex)
 sig.recoverPublicKey(msg).toRawBytes(); // === pub; // public key recovery
 
 // extraEntropy https://moderncrypto.org/mail-archive/curves/2017/000925.html