diff --git a/components/net/lwip-2.1.0/src/arch/sys_arch.c b/components/net/lwip-2.1.0/src/arch/sys_arch.c
old mode 100644
new mode 100755
index ee96249bec..fab418e526
--- a/components/net/lwip-2.1.0/src/arch/sys_arch.c
+++ b/components/net/lwip-2.1.0/src/arch/sys_arch.c
@@ -516,7 +516,7 @@ u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout)
             t = timeout / (1000/RT_TICK_PER_SECOND);
     }
 
-    ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, t);
+    ret = rt_mb_recv(*mbox, (rt_ubase_t *)msg, t);
 
     if(ret == -RT_ETIMEOUT)
         return SYS_ARCH_TIMEOUT;
@@ -547,7 +547,7 @@ u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg)
 {
     int ret;
 
-    ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, 0);
+    ret = rt_mb_recv(*mbox, (rt_ubase_t *)msg, 0);
 
     if(ret == -RT_ETIMEOUT)
         return SYS_ARCH_TIMEOUT;