diff --git a/libasn1fix/asn1fix_constraint_compat.c b/libasn1fix/asn1fix_constraint_compat.c
index a0e290bd891b5bb6b1a85cd622904acdb42794b6..676717e1bbcf332081fba1b4878ce2a777aef2e6 100644
--- a/libasn1fix/asn1fix_constraint_compat.c
+++ b/libasn1fix/asn1fix_constraint_compat.c
@@ -85,6 +85,7 @@ asn1constraint_compatible(asn1p_expr_type_e expr_type,
 	case ACT_CA_UNI:
 	case ACT_CA_INT:
 	case ACT_CA_EXC:
+	case ACT_CA_AEX:
 		return 1;
 	}