diff --git a/Config/mcucfg_cmx.h b/Config/mcucfg_cmx.h
index 4219a45..0f9fa4a 100644
--- a/Config/mcucfg_cmx.h
+++ b/Config/mcucfg_cmx.h
@@ -4,7 +4,7 @@
  * @brief    CMSIS Cortex-M Core Config File
  * @author   迟凯峰
  * @version  V2.1.1
- * @date     2024.04.13
+ * @date     2024.04.17
  ******************************************************************************/
 
 #ifndef __MCUCFG_CMX_H
@@ -196,7 +196,6 @@ extern void mTaskStack_PUSHPOP(s_bool_t, void *);
 #define MCUCFG_C51USING
 #define MCUCFG_SYSTICK_ATTRIBUTE
 #define MCUCFG_PENDSV_ATTRIBUTE
-#define MCUCFG_251_REENTRANT
 #define MCUCFG_TASKMSG_TYPE       1
 #define MCUCFG_TASKMSG_PSP        m_taskmsg_psp = (s_u32_t *)__m_get_psp()
 #define MCUCFG_TASKMSG_VAR        m_taskmsg_t r0__, m_taskmsg_t r1__, m_taskmsg_t r2__, m_taskmsg_t r3__