diff --git a/libc/kernel/uapi/linux/input-event-codes.h b/libc/kernel/uapi/linux/input-event-codes.h
index 4b251df..40827b5 100644
--- a/libc/kernel/uapi/linux/input-event-codes.h
+++ b/libc/kernel/uapi/linux/input-event-codes.h
@@ -720,6 +720,7 @@
 #define ABS_TILT_Y 0x1b
 #define ABS_TOOL_WIDTH 0x1c
 #define ABS_VOLUME 0x20
+#define ABS_PROFILE 0x21
 #define ABS_MISC 0x28
 #define ABS_RESERVED 0x2e
 #define ABS_MT_SLOT 0x2f