diff --git a/lwip/src/include/lwipopts.h b/lwip/src/include/lwipopts.h
index 5fb827a7..bf0d78d6 100644
--- a/lwip/src/include/lwipopts.h
+++ b/lwip/src/include/lwipopts.h
@@ -51,7 +51,7 @@
  */
 #define TCP_SND_BUF		1512
 
-#define TCP_SND_QUEUELEN        8
+#define TCP_SND_QUEUELEN        4
 
 /**
  * LWIP_BROADCAST_PING==1: respond to broadcast pings (default is unicast only)
@@ -93,7 +93,7 @@
 #define TCPIP_DEBUG		LWIP_DBG_OFF
 #define SYS_DEBUG		LWIP_DBG_OFF
 #define RAW_DEBUG		LWIP_DBG_OFF
-#define MEM_DEBUG		LWIP_DBG_ON
+#define MEM_DEBUG		LWIP_DBG_OFF
 #define IP_DEBUG		LWIP_DBG_OFF
 #define INET_DEBUG		LWIP_DBG_OFF
 #define NETIF_DEBUG		LWIP_DBG_OFF