diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index be65f63807..0d0fed4efb 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -470,7 +470,7 @@ static void MutateTxBlind(CMutableTransaction& tx, const std::string& strInput)
     for (size_t nOut = 0; nOut < tx.vout.size(); nOut++) {
         if (!tx.vout[nOut].nValue.IsExplicit())
             throw std::runtime_error("Invalid parameter: transaction outputs must be unblinded");
-        if (tx.vout[nOut].nNonce.vchCommitment.size() == 0) {
+        if (tx.vout[nOut].nNonce.IsNull()) {
             output_pubkeys.push_back(CPubKey());
         } else {
             CPubKey pubkey(tx.vout[nOut].nNonce.vchCommitment);
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 5aa97e2f00..1263e71065 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -614,7 +614,7 @@ void FillOutputBlinds(CMutableTransaction& tx, bool fUseWallet, std::vector<uint
             output_pubkeys.push_back(CPubKey());
             output_value_blinds.push_back(uint256());
             output_asset_blinds.push_back(uint256());
-        } else if (tx.vout[nOut].nNonce.vchCommitment.size() == 0) {
+        } else if (tx.vout[nOut].nNonce.IsNull()) {
             output_pubkeys.push_back(CPubKey());
             output_value_blinds.push_back(uint256());
             output_asset_blinds.push_back(uint256());