diff --git a/skeletons/constr_CHOICE.c b/skeletons/constr_CHOICE.c
index 4ac71a64e4acd7f3bd2d98763409bf5428d62fb5..140e365d9fa06ae7323f8ae88d6e4d3987941520 100644
--- a/skeletons/constr_CHOICE.c
+++ b/skeletons/constr_CHOICE.c
@@ -516,7 +516,7 @@ CHOICE_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 		}
 	} else {
 		_ASN_ERRLOG(app_errlog, app_key,
-			"%s: no CHOICE element given",
+			"%s: no CHOICE element given (%s:%d)",
 			td->name, __FILE__, __LINE__);
 		return -1;
 	}