diff --git a/components/net/lwip-2.1/porting/src/api_shell.c b/components/net/lwip-2.1/porting/src/api_shell.c
index 3e7323f9..e6aca2ad 100644
--- a/components/net/lwip-2.1/porting/src/api_shell.c
+++ b/components/net/lwip-2.1/porting/src/api_shell.c
@@ -373,7 +373,10 @@ LWIP_STATIC int OsPingFunc(u32_t *parg)
     while (!ping_kill && (forever || (i < cnt))) {
         iecho->seqno = htons((u16_t)i);
         iecho->chksum = 0;
+
+#if (CHECKSUM_GEN_ICMP > 0)
         iecho->chksum = inet_chksum((void *)iecho, iecho_len);
+#endif
 
         ret = sendto(sfd, iecho, iecho_len, 0, (struct sockaddr *)&to, (socklen_t)sizeof(to));
         if (ret < 0) {