diff --git a/src/rpc/rawtransaction.h b/src/rpc/rawtransaction.h
index 2186c1d5e..ec9d1f2cf 100644
--- a/src/rpc/rawtransaction.h
+++ b/src/rpc/rawtransaction.h
@@ -6,7 +6,7 @@
 #define BITCOIN_RPC_RAWTRANSACTION_H
 
 class CBasicKeyStore;
-class CMutableTransaction;
+struct CMutableTransaction;
 class UniValue;
 
 /** Sign a transaction with the given keystore and previous transactions */