diff --git a/test/mjsunit/es6/generators-mirror.js b/test/mjsunit/es6/generators-mirror.js
index bf21f4d..62fbae0 100644
--- a/test/mjsunit/es6/generators-mirror.js
+++ b/test/mjsunit/es6/generators-mirror.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
+// Flags: --expose-debug-as debug --ignition-generators
 // Test the mirror object for functions.
 
 function *generator(f) {