diff --git a/component/common/network/lwip/lwip_v1.4.1/port/realtek/arch/cc.h b/component/common/network/lwip/lwip_v1.4.1/port/realtek/arch/cc.h
index b381e22..8de0b16 100644
--- a/component/common/network/lwip/lwip_v1.4.1/port/realtek/arch/cc.h
+++ b/component/common/network/lwip/lwip_v1.4.1/port/realtek/arch/cc.h
@@ -33,6 +33,7 @@
 #define __CC_H__
 
 #include "cpu.h"
+#include <sys/time.h>
 
 typedef unsigned   char    u8_t;
 typedef signed     char    s8_t;
diff --git a/component/common/network/lwip/lwip_v1.4.1/src/include/lwip/sockets.h b/component/common/network/lwip/lwip_v1.4.1/src/include/lwip/sockets.h
index 3ea32f1..804a032 100644
--- a/component/common/network/lwip/lwip_v1.4.1/src/include/lwip/sockets.h
+++ b/component/common/network/lwip/lwip_v1.4.1/src/include/lwip/sockets.h
@@ -306,7 +306,7 @@ typedef struct ip_mreq {
 /** LWIP_TIMEVAL_PRIVATE: if you want to use the struct timeval provided
  * by your system, set this to 0 and include <sys/time.h> in cc.h */ 
 #ifndef LWIP_TIMEVAL_PRIVATE
-#define LWIP_TIMEVAL_PRIVATE 1
+#define LWIP_TIMEVAL_PRIVATE 0
 #endif
 
 #if LWIP_TIMEVAL_PRIVATE