diff --git a/src/rpc/rawtransaction_util.h b/src/rpc/rawtransaction_util.h
index 75727d2148..eca2c47697 100644
--- a/src/rpc/rawtransaction_util.h
+++ b/src/rpc/rawtransaction_util.h
@@ -1,29 +1,29 @@
 // Copyright (c) 2017 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #ifndef BITCOIN_RPC_RAWTRANSACTION_UTIL_H
 #define BITCOIN_RPC_RAWTRANSACTION_UTIL_H
 
 class CBasicKeyStore;
 class CChainParams;
 
 class UniValue;
-struct CMutableTransaction;
+class CMutableTransaction;
 
 namespace interfaces {
 class Chain;
 } // namespace interfaces
 
 /** Sign a transaction with the given keystore and previous transactions */
 UniValue SignTransaction(interfaces::Chain &chain, CMutableTransaction &mtx,
                          const UniValue &prevTxs, CBasicKeyStore *keystore,
                          bool tempKeystore, const UniValue &hashType);
 
 /** Create a transaction from univalue parameters */
 CMutableTransaction ConstructTransaction(const CChainParams &params,
                                          const UniValue &inputs_in,
                                          const UniValue &outputs_in,
                                          const UniValue &locktime);
 
 #endif // BITCOIN_RPC_RAWTRANSACTION_UTIL_H