diff --git a/include/ec_commands.h b/include/ec_commands.h
index 3a0d960ef1..094c866eaf 100644
--- a/include/ec_commands.h
+++ b/include/ec_commands.h
@@ -582,12 +582,6 @@ enum host_event_code {
 	/* Keyboard recovery combo with hardware reinitialization */
 	EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT = 30,
 
-	/*
-	 * Reserve this last bit to indicate that at least one bit in a
-	 * secondary host event word is set.  See crbug.com/633646.
-	 */
-	EC_HOST_EVENT_EXTENDED = 31,
-
 	/*
 	 * The high bit of the event mask is not used as a host event code.  If
 	 * it reads back as set, then the entire event mask should be