diff --git a/components/net/lwip/src/arch/include/arch/cc.h b/components/net/lwip/src/arch/include/arch/cc.h
index 75ac1b176d1a329ea69870ce39b79f1a48b09675..82704f644ae4065cc38bc2dffada50e0a9286aac 100644
--- a/components/net/lwip/src/arch/include/arch/cc.h
+++ b/components/net/lwip/src/arch/include/arch/cc.h
@@ -55,6 +55,8 @@ typedef rt_uint32_t	mem_ptr_t;
 
 #ifdef RT_USING_NEWLIB
 #include <errno.h>
+/* some errno not defined in newlib */
+#define ENSRNOTFOUND 163  /* Domain name not found */
 #else
 #define LWIP_PROVIDE_ERRNO
 #endif