diff --git a/source/net_mp.c b/source/net_mp.c
index 85273f4..868e3a9 100644
--- a/source/net_mp.c
+++ b/source/net_mp.c
@@ -262,7 +262,7 @@ int MPATH_CheckNewConnections (void)
 	if (net_acceptsocket == -1)
 		return -1;
 
-	if (recvfrom (net_acceptsocket, buf, 4, MSG_PEEK, NULL, NULL) > 0)
+	if (recvfrom (net_acceptsocket, buf, 4, MSG_PEEK, NULL, NULL) >= 0)
 		return net_acceptsocket;
 	return -1;
 }
diff --git a/source/net_udp.c b/source/net_udp.c
index 86b04ee..e565ce4 100644
--- a/source/net_udp.c
+++ b/source/net_udp.c
@@ -248,6 +248,9 @@ int UDP_Connect (int socket, struct qsockaddr *addr)
 int UDP_CheckNewConnections (void)
 {
 	unsigned long	available;
+	struct sockaddr_in	from;
+	socklen_t			fromlen;
+	char buff[1];
 
 	if (net_acceptsocket == -1)
 		return -1;
@@ -256,6 +259,7 @@ int UDP_CheckNewConnections (void)
 		Sys_Error ("UDP: ioctlsocket (FIONREAD) failed\n");
 	if (available)
 		return net_acceptsocket;
+	recvfrom (net_acceptsocket, buff, 0, 0, &from, &fromlen);
 	return -1;
 }
 
diff --git a/source/net_wins.c b/source/net_wins.c
index ecd249d..3e189df 100644
--- a/source/net_wins.c
+++ b/source/net_wins.c
@@ -393,7 +393,7 @@ int WINS_CheckNewConnections (void)
 	if (net_acceptsocket == -1)
 		return -1;
 
-	if (precvfrom (net_acceptsocket, buf, sizeof(buf), MSG_PEEK, NULL, NULL) > 0)
+	if (precvfrom (net_acceptsocket, buf, sizeof(buf), MSG_PEEK, NULL, NULL) >= 0)
 	{
 		return net_acceptsocket;
 	}