diff --git a/README.md b/README.md
index 3d3ad0850e75d689cbd078cfd5ee62f8b805c646..84c967d781d4eddcaaf50dddcf6dd005acdfb64d 100644
--- a/README.md
+++ b/README.md
@@ -62,16 +62,9 @@ make clean; make
 
 After the compilation is successful, the executable file  **NUCLEO-F767.hex**  is generated in the  **cortex-m7\_nucleo\_f767zi\_gcc/build**  directory. Burn the file to the corresponding board using STM32 ST-LINK Utility.
 
-## Change Log
-
-v1.0.1
-1. removed these KAL apis: `KalThreadGetInfo`,`KalDelayUs`,`KalTimerCreate`,`KalTimerStart`,`KalTimerChange`,`KalTimerStop`,`KalTimerDelete`,`KalTimerIsRunning`,`KalTickToMs`,`KalMsToTick`,`KalGetMemInfo`
-2. add some POSIX apis
-
-v1.0
-1. first release
-
 ## Repositories Involved<a name="section1371113476307"></a>
 
-**[kernel\_liteos\_m](https://gitee.com/openharmony/kernel_liteos_m)**
+[Kernel subsystem](https://gitee.com/openharmony/docs/blob/master/en/readme/kernel.md)
+
+**kernel\_liteos\_m**
 
diff --git a/README_zh.md b/README_zh.md
index 0ec989a52c6c7dcbbddeab84efd70174756b5b4d..1bf6b61406e2b736dfbd95242f6dc65a2581ea72 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -62,16 +62,9 @@ make clean; make
 
 编译成功后在cortex-m7\_nucleo\_f767zi\_gcc/build目录下生成NUCLEO-F767.hex可执行文件，通过烧录工具STM32 ST-LINK Utility烧录到对应的单板。
 
-## 修改日志
-
-v1.0.1
-1. 删除以下KAL接口: `KalThreadGetInfo`,`KalDelayUs`,`KalTimerCreate`,`KalTimerStart`,`KalTimerChange`,`KalTimerStop`,`KalTimerDelete`,`KalTimerIsRunning`,`KalTickToMs`,`KalMsToTick`,`KalGetMemInfo`
-2. 添加部分POSIX接口
-
-v1.0
-1. 首次发布
-
 ## 相关仓<a name="section1371113476307"></a>
 
-**[kernel\_liteos\_m](https://gitee.com/openharmony/kernel_liteos_m)**
+[内核子系统](https://gitee.com/openharmony/docs/blob/master/zh-cn/readme/%E5%86%85%E6%A0%B8%E5%AD%90%E7%B3%BB%E7%BB%9F.md)
+
+**kernel\_liteos\_m**
 
diff --git a/components/net/lwip-2.1/porting/src/sys_arch.c b/components/net/lwip-2.1/porting/src/sys_arch.c
index 1c1ae6f3aa3efa148261be8cc38677155597f539..2aa498024661faad4256fd391d08b6fd5912472a 100755
--- a/components/net/lwip-2.1/porting/src/sys_arch.c
+++ b/components/net/lwip-2.1/porting/src/sys_arch.c
@@ -41,8 +41,14 @@
 #include <los_timer.h>
 #include <los_config.h>
 
+#ifndef YES
 #define YES 1
+#endif
+
+#ifndef NO
 #define NO 0
+#endif
+
 #define LOSCFG_KERNEL_SMP NO
 
 #if (LOSCFG_KERNEL_SMP == YES)