diff --git a/src/callrpc.cpp b/src/callrpc.cpp
index e7c912839e..f414e15564 100644
--- a/src/callrpc.cpp
+++ b/src/callrpc.cpp
@@ -86,7 +86,7 @@ UniValue CallRPC(const std::string& strMethod, const UniValue& params, bool conn
     int port = GetArg(strport, BaseParams().RPCPort());
 
     if (connectToMainchain) {
-        strhost = "-mainchainhost";
+        strhost = "-mainchainrpchost";
         strport = "-mainchainrpcport";
         strpassword = "-mainchainrpcpassword";
         struser = "-mainchainrpcuser";