*** empty log message ***

diff --git a/skeletons/UTF8String.c b/skeletons/UTF8String.c
index 5d0334f..85f2ccd 100644
--- a/skeletons/UTF8String.c
+++ b/skeletons/UTF8String.c
@@ -67,30 +67,30 @@
 
 int
 UTF8String_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
-		asn_app_consume_bytes_f *app_errlog, void *app_key) {
+		asn_app_constraint_failed_f *ctfailcb, void *app_key) {
 	ssize_t len = UTF8String_length((const UTF8String_t *)sptr);
 	switch(len) {
 	case U8E_EINVAL:
-		_ASN_ERRLOG(app_errlog, app_key,
+		_ASN_CTFAIL(app_key, td,
 			"%s: value not given", td->name);
 		break;
 	case U8E_TRUNC:
-		_ASN_ERRLOG(app_errlog, app_key,
+		_ASN_CTFAIL(app_key, td,
 			"%s: truncated UTF-8 sequence (%s:%d)",
 			td->name, __FILE__, __LINE__);
 		break;
 	case U8E_ILLSTART:
-		_ASN_ERRLOG(app_errlog, app_key,
+		_ASN_CTFAIL(app_key, td,
 			"%s: UTF-8 illegal start of encoding (%s:%d)",
 			td->name, __FILE__, __LINE__);
 		break;
 	case U8E_NOTCONT:
-		_ASN_ERRLOG(app_errlog, app_key,
+		_ASN_CTFAIL(app_key, td,
 			"%s: UTF-8 not continuation (%s:%d)",
 			td->name, __FILE__, __LINE__);
 		break;
 	case U8E_NOTMIN:
-		_ASN_ERRLOG(app_errlog, app_key,
+		_ASN_CTFAIL(app_key, td,
 			"%s: UTF-8 not minimal sequence (%s:%d)",
 			td->name, __FILE__, __LINE__);
 		break;