diff --git a/libc/kernel/uapi/linux/hidraw.h b/libc/kernel/uapi/linux/hidraw.h
index 25a9a17..1eb024c 100644
--- a/libc/kernel/uapi/linux/hidraw.h
+++ b/libc/kernel/uapi/linux/hidraw.h
@@ -29,6 +29,7 @@
 #define HIDIOCGINPUT(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x0A, len)
 #define HIDIOCSOUTPUT(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x0B, len)
 #define HIDIOCGOUTPUT(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x0C, len)
+#define HIDIOCREVOKE _IOW('H', 0x0D, int)
 #define HIDRAW_FIRST_MINOR 0
 #define HIDRAW_MAX_DEVICES 64
 #define HIDRAW_BUFFER_SIZE 64