diff --git a/Demo-Build/80251/demo_debug.c b/Demo-Build/80251/demo_debug.c
index 282a9983..643a05b9 100644
--- a/Demo-Build/80251/demo_debug.c
+++ b/Demo-Build/80251/demo_debug.c
@@ -3,11 +3,12 @@
  * @file     demo_debug.c
  * @brief    例程-DEBUG for STC32G
  * @author   迟凯峰
- * @version  V1.0.2
- * @date     2026.06.28
+ * @version  V1.0.3
+ * @date     2026.07.31
  ******************************************************************************/
 
-#if 1 /* 编译开关 */
+#if 1 /* 编译开关 */ \
+ && defined ( __C251__ )
 
 #include "CosyOS.H"
 #if (SYSCFG_DEBUGGING == __ENABLED__)