diff --git a/src/ch32fun.c b/src/ch32fun.c
index 27c2db2..6f986e0 100644
--- a/src/ch32fun.c
+++ b/src/ch32fun.c
@@ -85,7 +85,7 @@ void __libc_init_array(void)
 #define _SSP_STRING_H_
 #define _SSP_STDIO_H_
 
-//#include "ch32fun.h"
+// #include "ch32fun.h"
 #include <ch32fun.h>
 #include <limits.h>
 #include <stdarg.h>