diff --git a/common/main/net_udp.h b/common/main/net_udp.h
index 1f52e9db9..23f81911b 100644
--- a/common/main/net_udp.h
+++ b/common/main/net_udp.h
@@ -14,6 +14,7 @@
 #include "multi.h"
 
 #ifdef __cplusplus
+#include "pack.h"
 
 // Exported functions
 int net_udp_setup_game(void);
@@ -119,11 +120,11 @@ struct UDP_netgame_info_lite : public prohibit_void_ptr<UDP_netgame_info_lite>
 	bit_game_flags game_flag;
 };
 
-struct UDP_sequence_packet
+struct UDP_sequence_packet : prohibit_void_ptr<UDP_sequence_packet>
 {
 	ubyte           		type;
 	netplayer_info  		player;
-} __pack__;
+};
 
 // player position packet structure
 struct UDP_frame_info
diff --git a/similar/main/net_udp.cpp b/similar/main/net_udp.cpp
index 85d1b1ada..24c25d2c3 100644
--- a/similar/main/net_udp.cpp
+++ b/similar/main/net_udp.cpp
@@ -1072,7 +1072,7 @@ void net_udp_init()
 		udp_close_socket(1);
 
 	Netgame = {};
-	memset(&UDP_Seq, 0, sizeof(UDP_sequence_packet));
+	UDP_Seq = {};
 	memset(&UDP_MData, 0, sizeof(UDP_mdata_info));
 	net_udp_noloss_init_mdata_queue();
 	UDP_Seq.type = UPID_REQUEST;
@@ -1338,7 +1338,7 @@ static void net_udp_welcome_player(UDP_sequence_packet *their)
 	}
 
 	player_num = -1;
-	memset(&UDP_sync_player, 0, sizeof(UDP_sequence_packet));
+	UDP_sync_player = {};
 	Network_player_added = 0;
 
 	for (i = 0; i < N_players; i++)
@@ -2574,8 +2574,7 @@ static void net_udp_process_request(UDP_sequence_packet *their)
 
 static void net_udp_process_packet(ubyte *data, struct _sockaddr sender_addr, int length )
 {
-	UDP_sequence_packet their;
-	memset(&their, 0, sizeof(UDP_sequence_packet));
+	UDP_sequence_packet their{};
 
 	switch (data[0])
 	{
@@ -3845,9 +3844,7 @@ static int net_udp_wait_for_sync(void)
 
 	if (Network_status != NETSTAT_PLAYING)
 	{
-		UDP_sequence_packet me;
-
-		memset(&me, 0, sizeof(UDP_sequence_packet));
+		UDP_sequence_packet me{};
 		me.type = UPID_QUIT_JOINING;
 		memcpy( me.player.callsign, Players[Player_num].callsign, CALLSIGN_LEN+1 );
 		net_udp_send_sequence_packet(me, Netgame.players[0].protocol.udp.addr);