diff --git a/libasn1compiler/asn1c_constraint.c b/libasn1compiler/asn1c_constraint.c
index 36b2775..beb8745 100644
--- a/libasn1compiler/asn1c_constraint.c
+++ b/libasn1compiler/asn1c_constraint.c
@@ -33,11 +33,10 @@
 
 	etype = _find_terminal_type(arg);
 
-	r_value=asn1constraint_compute_PER_range(etype, ct, ACT_EL_RANGE, 0, 0);
-	r_size = asn1constraint_compute_PER_range(etype, ct, ACT_CT_SIZE, 0, 0);
+	r_value=asn1constraint_compute_PER_range(etype, ct, ACT_EL_RANGE,0,0,0);
+	r_size = asn1constraint_compute_PER_range(etype, ct, ACT_CT_SIZE,0,0,0);
 	if(r_value) {
-		if(r_value->not_PER_visible
-		|| r_value->extensible
+		if(r_value->incompatible
 		|| r_value->empty_constraint
 		|| (r_value->left.type == ARE_MIN
 			&& r_value->right.type == ARE_MAX)
@@ -50,8 +49,7 @@
 		}
 	}
 	if(r_size) {
-		if(r_size->not_PER_visible
-		|| r_size->extensible
+		if(r_size->incompatible
 		|| r_size->empty_constraint
 		|| (r_size->left.value == 0	/* or .type == MIN */
 			&& r_size->right.type == ARE_MAX)
@@ -200,11 +198,10 @@
 
 	etype = _find_terminal_type(arg);
 
-	range = asn1constraint_compute_PER_range(etype, ct, ACT_CT_FROM, 0, 0);
+	range = asn1constraint_compute_PER_range(etype, ct, ACT_CT_FROM, 0,0,0);
 	if(!range) return 0;
 
-	if(range->not_PER_visible
-	|| range->extensible
+	if(range->incompatible
 	|| range->empty_constraint) {
 		asn1constraint_range_free(range);
 		return 0;