diff --git a/include/uapi/linux/lirc.h b/include/uapi/linux/lirc.h
index c1eb960adde3..bf0672a6d341 100644
--- a/include/uapi/linux/lirc.h
+++ b/include/uapi/linux/lirc.h
@@ -196,6 +196,7 @@ struct lirc_scancode {
  * @RC_PROTO_RCMM24: RC-MM protocol 24 bits
  * @RC_PROTO_RCMM32: RC-MM protocol 32 bits
  * @RC_PROTO_XBOX_DVD: Xbox DVD Movie Playback Kit protocol
+ * @RC_PROTO_MAX: Maximum value of enum rc_proto
  */
 enum rc_proto {
 	RC_PROTO_UNKNOWN	= 0,