diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index b53f799..1d8c1f2 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -236,6 +236,7 @@
 	XFRMA_ETIMER_THRESH,
 	XFRMA_SRCADDR,		/* xfrm_address_t */
 	XFRMA_COADDR,		/* xfrm_address_t */
+	XFRMA_LASTUSED,
 	__XFRMA_MAX
 
 #define XFRMA_MAX (__XFRMA_MAX - 1)