diff --git a/bip-0322.mediawiki b/bip-0322.mediawiki
index 1ac9308b..309bde7f 100644
--- a/bip-0322.mediawiki
+++ b/bip-0322.mediawiki
@@ -96,6 +96,7 @@ The <code>to_sign</code> transaction is:
     vin[0].prevout.hash = to_spend.txid
     vin[0].prevout.n = 0
     vin[0].nSequence = 0 or (FULL format only) as appropriate (for time locks)
+    vin[0].scriptSig = [] or (FULL format only) as appropriate (for non segwit-native transactions)
     vin[0].scriptWitness = message_signature
     vout[0].nValue = 0
     vout[0].scriptPubKey = OP_RETURN