structure comparison functions
diff --git a/skeletons/OCTET_STRING.h b/skeletons/OCTET_STRING.h
index 63e7da8..fa40a0d 100644
--- a/skeletons/OCTET_STRING.h
+++ b/skeletons/OCTET_STRING.h
@@ -23,6 +23,7 @@
asn_struct_free_f OCTET_STRING_free;
asn_struct_print_f OCTET_STRING_print;
asn_struct_print_f OCTET_STRING_print_utf8;
+asn_struct_compare_f OCTET_STRING_compare;
ber_type_decoder_f OCTET_STRING_decode_ber;
der_type_encoder_f OCTET_STRING_encode_der;
xer_type_decoder_f OCTET_STRING_decode_xer_hex; /* Hexadecimal */