diff --git a/include/linux/input.h b/include/linux/input.h
index 3862e32..177261e 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -129,6 +129,8 @@
 
 #define EVIOCGRAB		_IOW('E', 0x90, int)			/* Grab/Release device */
 
+#define EVIOCSCLOCKID		_IOW('E', 0xa0, int)			/* Set clockid to be used for timestamps */
+
 /*
  * Device properties and quirks
  */