diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index c894267..430afd0 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -281,7 +281,7 @@
 
 struct xfrm_usersa_id {
 	xfrm_address_t			daddr;
-	__u32				spi;
+	__be32				spi;
 	__u16				family;
 	__u8				proto;
 };