diff --git a/tests/lwip_sock_udp/stack.c b/tests/lwip_sock_udp/stack.c
index d109e3524873b6be61781e111d4393a2041d41d4..d4a08c43af9b30f60ae93bed1ca6a815eac3b918 100644
--- a/tests/lwip_sock_udp/stack.c
+++ b/tests/lwip_sock_udp/stack.c
@@ -39,7 +39,7 @@
 #include "constants.h"
 #include "stack.h"
 
-#define _MSG_QUEUE_SIZE         (1)
+#define _MSG_QUEUE_SIZE         (4)
 #define _SEND_DONE              (0x92d7)
 #define _NETDEV_BUFFER_SIZE     (128)