diff --git a/libasn1fix/asn1fix_constr.c b/libasn1fix/asn1fix_constr.c
index 353473d..0421a52 100644
--- a/libasn1fix/asn1fix_constr.c
+++ b/libasn1fix/asn1fix_constr.c
@@ -152,7 +152,7 @@
 
 	if(arg->mod->module_flags & MSF_EXTENSIBILITY_IMPLIED
 	&& ext_count == 0) {
-		v = asn1p_expr_new(0);
+		v = asn1p_expr_new(0, arg->mod);
 		if(v) {
 			v->Identifier = strdup("...");
 			v->expr_type = A1TC_EXTENSIBLE;