diff --git a/lib_xua/api/xua_audiohub.h b/lib_xua/api/xua_audiohub.h
index db7e8d94..9694cc10 100644
--- a/lib_xua/api/xua_audiohub.h
+++ b/lib_xua/api/xua_audiohub.h
@@ -5,6 +5,7 @@
 #if __XC__
 
 #include "xccompat.h"
+#include "xs1.h"
 
 #if XUA_USB_EN
 #include "dfu_interface.h"