diff --git a/iguana/iguana_chains.c b/iguana/iguana_chains.c
index 60e5c54d1..45a6830d5 100755
--- a/iguana/iguana_chains.c
+++ b/iguana/iguana_chains.c
@@ -324,7 +324,11 @@ void iguana_chainparms(struct supernet_info *myinfo,struct iguana_chain *chain,c
         if ( (chain->rpcport= juint(argjson,"rpc")) == 0 && strcmp(chain->symbol,"RELAY") != 0 )
         {
             if ( chain->portp2p != 0 )
-                chain->rpcport = chain->portp2p+1;
+            {
+                if ( strcmp(chain->symbol,"BTC") == 0 )
+                    chain->rpcport = chain->portp2p+1;
+                else chain->rpcport = chain->portp2p-1;
+            }
         }
         if ( chain->portp2p == 0 )
         {