diff --git a/drivers/unix/packet_peer_udp_posix.cpp b/drivers/unix/packet_peer_udp_posix.cpp
index 4040aaaf4b1..4e48e835099 100644
--- a/drivers/unix/packet_peer_udp_posix.cpp
+++ b/drivers/unix/packet_peer_udp_posix.cpp
@@ -269,6 +269,7 @@ PacketPeerUDPPosix::PacketPeerUDPPosix() {
 	queue_count = 0;
 	peer_port = 0;
 	sock_type = IP::TYPE_NONE;
+	rb.resize(8);
 }
 
 PacketPeerUDPPosix::~PacketPeerUDPPosix() {
diff --git a/platform/windows/packet_peer_udp_winsock.cpp b/platform/windows/packet_peer_udp_winsock.cpp
index e326a5a6fb5..5290eebc4a7 100644
--- a/platform/windows/packet_peer_udp_winsock.cpp
+++ b/platform/windows/packet_peer_udp_winsock.cpp
@@ -278,6 +278,7 @@ PacketPeerUDPWinsock::PacketPeerUDPWinsock() {
 	queue_count = 0;
 	peer_port = 0;
 	sock_type = IP::TYPE_NONE;
+	rb.resize(8);
 }
 
 PacketPeerUDPWinsock::~PacketPeerUDPWinsock() {