structure comparison functions
diff --git a/skeletons/ObjectDescriptor.c b/skeletons/ObjectDescriptor.c
index ba539f8..b80b69e 100644
--- a/skeletons/ObjectDescriptor.c
+++ b/skeletons/ObjectDescriptor.c
@@ -17,6 +17,7 @@
 	"ObjectDescriptor",
 	OCTET_STRING_free,
 	OCTET_STRING_print_utf8,   /* Treat as ASCII subset (it's not) */
+	OCTET_STRING_compare,
 	asn_generic_unknown_constraint,
 	OCTET_STRING_decode_ber,    /* Implemented in terms of OCTET STRING */
 	OCTET_STRING_encode_der,