diff --git a/include/uapi/linux/serio.h b/include/uapi/linux/serio.h
index ccd0ccd00f470b92090f1a6eff4a5a03940fa7f6..ac217c6f0151063ba759b7895472dcddb11b29c9 100644
--- a/include/uapi/linux/serio.h
+++ b/include/uapi/linux/serio.h
@@ -80,5 +80,6 @@
 #define SERIO_WACOM_IV	0x3e
 #define SERIO_EGALAX	0x3f
 #define SERIO_PULSE8_CEC	0x40
+#define SERIO_RAINSHADOW_CEC	0x41
 
 #endif /* _UAPI_SERIO_H */