diff --git a/components/net/lwip-1.4.1/src/lwipopts.h b/components/net/lwip-1.4.1/src/lwipopts.h
index 029a758747039c3c988934229b6bb003e2736dd4..dd5a3ace96dc14b5465709c9aa7e435d327d18d5 100644
--- a/components/net/lwip-1.4.1/src/lwipopts.h
+++ b/components/net/lwip-1.4.1/src/lwipopts.h
@@ -137,12 +137,12 @@
 /* ---------- Pbuf options ---------- */
 /* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
 #ifdef RT_LWIP_PBUF_NUM
-#define PBUF_POOL_SIZE              RT_LWIP_PBUF_NUM
+#define PBUF_POOL_SIZE               RT_LWIP_PBUF_NUM
 #endif
 
 /* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
 #ifdef RT_LWIP_PBUF_POOL_BUFSIZE
-#define PBUF_POOL_BUFSIZE			 RT_LWIP_PBUF_POOL_BUFSIZE
+#define PBUF_POOL_BUFSIZE            RT_LWIP_PBUF_POOL_BUFSIZE
 #endif
 
 /* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
@@ -178,7 +178,7 @@
 
 /* TCP sender buffer space (bytes). */
 #ifdef RT_LWIP_TCP_SND_BUF
-#define TCP_SND_BUF					   RT_LWIP_TCP_SND_BUF
+#define TCP_SND_BUF                 RT_LWIP_TCP_SND_BUF
 #else
 #define TCP_SND_BUF                 (TCP_MSS * 2)
 #endif
@@ -309,7 +309,7 @@
  * in this file.
  */
 #ifdef RT_LWIP_PPPOE
-#define PPPOE_SUPPORT				1
+#define PPPOE_SUPPORT               1
 #else
 #define PPPOE_SUPPORT               0
 #endif
@@ -317,7 +317,7 @@
 #ifdef RT_LWIP_PPPOS
 #define PPPOS_SUPPORT               1
 #else
-#define PPPOS_SUPPORT				0
+#define PPPOS_SUPPORT               0
 #endif
 
 #define PAP_SUPPORT                 1      /* Set > 0 for PAP. */