diff --git a/includes/tree.h b/includes/tree.h
index 21f2ca10..c5782825 100644
--- a/includes/tree.h
+++ b/includes/tree.h
@@ -173,6 +173,7 @@ struct universe {
 				  struct option_cache *));
 	int (*get_func) PROTO ((struct data_string *, struct universe *,
 				struct packet *, struct lease *,
+				struct option_state *, struct option_state *,
 				struct option_state *, int));
 	void (*set_func) PROTO ((struct universe *, struct option_state *,
 				 struct option_cache *, enum statement_op));
@@ -181,8 +182,9 @@ struct universe {
 				    struct option_state *, int));
 	int (*option_state_dereference) PROTO ((struct universe *,
 						struct option_state *));
-	int (*encapsulate) PROTO ((struct data_string *, struct option_state *,
-				   struct lease *, struct universe *));
+	int (*encapsulate) PROTO ((struct data_string *, struct packet *,
+				   struct lease *, struct option_state *,
+				   struct option_state *, struct universe *));
 	void (*store_tag) PROTO ((unsigned char *, u_int32_t));
 	void (*store_length) PROTO ((unsigned char *, u_int32_t));
 	int tag_size, length_size;