diff --git a/dip-0003.md b/dip-0003.md
index f5329d2..6339342 100644
--- a/dip-0003.md
+++ b/dip-0003.md
@@ -105,7 +105,7 @@ The transaction consists of the following data in the payload area:
 | scriptPayout | Script | Variable | Payee script (p2pkh/p2sh) |
 | inputsHash | uint256 | 32 | Hash of all the outpoints of the transaction inputs |
 | payloadSigSize | compactSize uint | 1-9 | Size of the Signature |
-| payloadSig | vector<unsigned char> | Variable | Signature of the hash of the ProTx fields. Signed with the key corresponding to the collateral outpoint. |
+| payloadSig | vector<unsigned char> | Variable | Signature of the hash of the ProTx fields. Signed with the key corresponding to the collateral outpoint in case the collateral is not part of the ProRegTx itself, empty otherwise. |
 
 ## Updating Masternode Information