diff --git a/iguana/exchanges/LP_bitcoin.c b/iguana/exchanges/LP_bitcoin.c
index a58fa66ba..a34c60e51 100644
--- a/iguana/exchanges/LP_bitcoin.c
+++ b/iguana/exchanges/LP_bitcoin.c
@@ -2196,7 +2196,12 @@ int32_t bitcoin_wif2addr(void *ctx,uint8_t wiftaddr,uint8_t taddr,uint8_t pubtyp
 int32_t bitcoin_priv2wif(uint8_t wiftaddr,char *wifstr,bits256 privkey,uint8_t addrtype)
 {
     uint8_t data[128]; int32_t offset,len = 32;
-    offset = 1 + (wiftaddr != 0);
+    data[0] = wiftaddr;
+    if ( wiftaddr != 0 )
+    {
+        data[1] = addrtype;
+        offset = 2;
+    } else offset = 1;
     memcpy(data+offset,privkey.bytes,sizeof(privkey));
     data[offset + len++] = 1;
     len = base58encode_checkbuf(wiftaddr,addrtype,data,len);
diff --git a/iguana/exchanges/mm.c b/iguana/exchanges/mm.c
index f60829a4a..e281a5984 100644
--- a/iguana/exchanges/mm.c
+++ b/iguana/exchanges/mm.c
@@ -117,7 +117,7 @@ int main(int argc, const char * argv[])
         for (i=0; i<1000000000; i++)
         {
             privkey = rand256(0);
-            bitcoin_priv2wif(0xab,wifstr,privkey,0x36);
+            bitcoin_priv2wif(0x36,wifstr,privkey,0xab);
             if ( wifstr[4] == 'h' && wifstr[5] == 'u' && wifstr[6] == 's' )
             {
                 printf("i.%d %s -> wif.%s\n",i,bits256_str(str,privkey),wifstr);