diff --git a/skeletons/T61String.c b/skeletons/T61String.c
index a37c176..4157a6b 100644
--- a/skeletons/T61String.c
+++ b/skeletons/T61String.c
@@ -22,6 +22,7 @@
 	OCTET_STRING_encode_der,
 	OCTET_STRING_decode_xer_hex,
 	OCTET_STRING_encode_xer,
+	0,
 	0, /* Use generic outmost tag fetcher */
 	asn_DEF_T61String_tags,
 	sizeof(asn_DEF_T61String_tags)
@@ -29,6 +30,7 @@
 	asn_DEF_T61String_tags,
 	sizeof(asn_DEF_T61String_tags)
 	  / sizeof(asn_DEF_T61String_tags[0]),
+	0,	/* No PER visible constraints */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };