diff --git a/tests/language/unsorted/cyclic_type2_test.dart b/tests/language/unsorted/cyclic_type2_test.dart
index 0b62f2fa1a1..5a4d120c0e8 100644
--- a/tests/language/unsorted/cyclic_type2_test.dart
+++ b/tests/language/unsorted/cyclic_type2_test.dart
@@ -2,6 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// Prevent obfuscation:
+// dart2jsOptions=--no-minify
+
 // Tests self referencing types.
 
 import "package:expect/expect.dart";