diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index ec99d7516..46a059892 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -629,7 +629,7 @@ UniValue kvupdate(const UniValue& params, bool fHelp, const CPubKey& mypk)
     if (fHelp || params.size() < 3 )
         throw runtime_error(
             "kvupdate key \"value\" days passphrase\n"
-            "\nStore a key value. This feature is only available for asset chains.\n"
+            "\nStore a key value. This feature is only available for non-z2z chains.\n"
             "\nArguments:\n"
             "1. key                      (string, required) key\n"
             "2. \"value\"                (string, required) value\n"
@@ -654,8 +654,11 @@ UniValue kvupdate(const UniValue& params, bool fHelp, const CPubKey& mypk)
         );
     if (!EnsureWalletIsAvailable(fHelp))
         return 0;
-    if ( SMART_CHAIN_SYMBOL[0] == 0 )
-        return(0);
+
+    if (ASSETCHAINS_PRIVATE) {
+        throw JSONRPCError(RPC_TYPE_ERROR, "This RPC is only available on non z2z chains");
+    }
+
     haveprivkey = 0;
     memset(&sig,0,sizeof(sig));
     memset(&privkey,0,sizeof(privkey));