diff --git a/src/libcharon/plugins/socket_default/socket_default_socket.c b/src/libcharon/plugins/socket_default/socket_default_socket.c
index 68e5a7a0e..b59b60c3e 100644
--- a/src/libcharon/plugins/socket_default/socket_default_socket.c
+++ b/src/libcharon/plugins/socket_default/socket_default_socket.c
@@ -559,7 +559,11 @@ METHOD(socket_t, sender, status_t,
 	{
 		if (family == AF_INET)
 		{
+#ifdef __FreeBSD__
+			int ds4;
+#else
 			uint8_t ds4;
+#endif
 
 			ds4 = packet->get_dscp(packet) << 2;
 			if (setsockopt(skt, SOL_IP, IP_TOS, &ds4, sizeof(ds4)) == 0)