diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip-1.4.1/src/netif/ethernetif.c
index ab7743290aa4eb22d5618b4f030bfed71e1928e9..c47bb8e191ce75f1f7f46ab030c6f9526b8811a9 100644
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@@ -428,6 +428,10 @@ INIT_DEVICE_EXPORT(eth_system_device_init);
 #include <finsh.h>
 void set_if(char* netif_name, char* ip_addr, char* gw_addr, char* nm_addr)
 {
+#if	LWIP_DHCP
+	return ;
+#endif
+
     struct ip_addr *ip;
     struct ip_addr addr;
     struct netif * netif = netif_list;
diff --git a/examples/network/tcpclient.c b/examples/network/tcpclient.c
index 088206fdb1d960b4bb2f1af2f45ba11a073d642b..7a0d4b5365bb199052bdbf7d331c8e835e8a2f5f 100644
--- a/examples/network/tcpclient.c
+++ b/examples/network/tcpclient.c
@@ -81,7 +81,7 @@ void tcpclient(const char* url, int port)
         else
         {
             /* 在控制终端显示收到的数据 */
-            rt_kprintf("\nRecieved data = %s " , recv_data);
+            rt_kprintf("\nReceived data = %s " , recv_data);
         }
 
         /* 发送数据到sock连接 */
diff --git a/examples/network/tcpserver.c b/examples/network/tcpserver.c
index 54b8c9301d4ed71513c5984c12a82f6d66e22a47..3f34bc2c29fe1f66bb1f09a072839c1a5f7cd66b 100644
--- a/examples/network/tcpserver.c
+++ b/examples/network/tcpserver.c
@@ -101,7 +101,7 @@ void tcpserv(void* parameter)
            else
            {
                /* 在控制终端显示收到的数据 */
-               rt_kprintf("RECIEVED DATA = %s \n" , recv_data);
+               rt_kprintf("RECEIVED DATA = %s \n" , recv_data);
            }
        }
    }