diff --git a/libasn1fix/asn1fix_value.h b/libasn1fix/asn1fix_value.h
index 7234035..067894a 100644
--- a/libasn1fix/asn1fix_value.h
+++ b/libasn1fix/asn1fix_value.h
@@ -15,7 +15,8 @@
  * -1/EEXIST:	Reference is not compatible with the desired type.
  * -1/ESRCH:	Cannot find the terminal reference.
  */
-int asn1f_value_resolve(arg_t *arg, asn1p_expr_t *tc);
+int asn1f_value_resolve(arg_t *arg, asn1p_expr_t *tc,
+	const enum asn1p_constraint_type_e *opt_constr_type);
 
 /*
  * Check if a value in value_expr refers to the enumeration or integer element