diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 5f9357dcb060..f48e47e230c3 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1242,6 +1242,10 @@ struct v4l2_selection {
 
 typedef __u64 v4l2_std_id;
 
+/*
+ * Attention: Keep the V4L2_STD_* bit definitions in sync with
+ * include/dt-bindings/display/sdtv-standards.h SDTV_STD_* bit definitions.
+ */
 /* one bit for each */
 #define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
 #define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)