diff --git a/iguana/exchanges/LP_swap.c b/iguana/exchanges/LP_swap.c
index 0bf13129d..11b41a792 100644
--- a/iguana/exchanges/LP_swap.c
+++ b/iguana/exchanges/LP_swap.c
@@ -988,6 +988,7 @@ struct basilisk_swap *LP_swapinit(int32_t iambob,int32_t optionduration,bits256
     swap->persistent_pubkey = pubkey25519;
     swap->persistent_privkey = privkey;
     memcpy(swap->persistent_pubkey33,pubkey33,33);
+    calc_rmd160_sha256(swap->changermd160,pubkey33,33);
     if ( bitcoin_swapinit(privkey,pubkey33,pubkey25519,swap,optionduration,!iambob) == 0 )
     {
         printf("error doing swapinit\n");