diff --git a/Chapter2_C_与_C++/2.4_高级宏操作.md b/Chapter2_C_与_C++/2.4_高级宏操作.md
index f677060..7b88758 100644
--- a/Chapter2_C_与_C++/2.4_高级宏操作.md
+++ b/Chapter2_C_与_C++/2.4_高级宏操作.md
@@ -134,10 +134,10 @@ else
 ```cpp
 #define DEBUG_LEVEL 1
 
-#define DEBUG(level, fmt, ...) \
+#define DEBUG(level, ...) \
 do { \
     if(level<DEBUG_LEVEL) \
-        printf(fmt, __VA_ARGS__); \
+        printf(__VA_ARGS__); \
 }while(0)
 
 DEBUG(0, "file:%s, func:%s, line:%d\n", __FILE__, __FUNCTION__, __LINE__);  // 打印当前文件名, 函数名和行号.