diff --git a/iguana/dpow/dpow_rpc.c b/iguana/dpow/dpow_rpc.c
index a2e7581d1..d3bf99f75 100755
--- a/iguana/dpow/dpow_rpc.c
+++ b/iguana/dpow/dpow_rpc.c
@@ -145,7 +145,7 @@ char *dpow_signrawtransaction(struct supernet_info *myinfo,struct iguana_info *c
     {
         array = cJSON_CreateArray();
         jaddistr(array,rawtx);
-        jaddi(array,vins);
+        jaddi(array,jduplicate(vins));
         paramstr = jprint(array,1);
         retstr = bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"signrawtransaction",paramstr);
         //printf("%s signrawtransaction.(%s) params.(%s)\n",coin->symbol,retstr,paramstr);