diff --git a/src/bacnet/basic/object/netport.c b/src/bacnet/basic/object/netport.c
index 015bc3b9..9647e995 100644
--- a/src/bacnet/basic/object/netport.c
+++ b/src/bacnet/basic/object/netport.c
@@ -602,7 +602,7 @@ bool Network_Port_MAC_Address(
                     &ip_mac[0], &Object_List[index].Network.IPv4.IP_Address, 4);
                 /* convert port from host-byte-order to network-byte-order */
                 encode_unsigned16(&ip_mac[4],
-                    &Object_List[index].Network.IPv4.Port);
+                    Object_List[index].Network.IPv4.Port);
                 mac = &ip_mac[0];
                 mac_len = sizeof(ip_mac);
                 break;