diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 5a00aa8..e144a25 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -279,7 +279,7 @@
 	xfrm_address_t		*(*local_addr)(struct xfrm_state *, xfrm_address_t *);
 	xfrm_address_t		*(*remote_addr)(struct xfrm_state *, xfrm_address_t *);
 	/* Estimate maximal size of result of transformation of a dgram */
-	u32			(*get_max_size)(struct xfrm_state *, int size);
+	u32			(*get_mtu)(struct xfrm_state *, int size);
 };
 
 extern int xfrm_register_type(struct xfrm_type *type, unsigned short family);