diff --git a/rbutil/chinachippatcher/chinachip.c b/rbutil/chinachippatcher/chinachip.c
index d9e3e75817..79b5acad66 100644
--- a/rbutil/chinachippatcher/chinachip.c
+++ b/rbutil/chinachippatcher/chinachip.c
@@ -19,7 +19,6 @@
  *
  ****************************************************************************/
 #include <stdio.h>
-#include <stdarg.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdint.h>