diff --git a/test/mjsunit/es6/generators-debug-scopes.js b/test/mjsunit/es6/generators-debug-scopes.js
index 126572d..b2a1ded 100644
--- a/test/mjsunit/es6/generators-debug-scopes.js
+++ b/test/mjsunit/es6/generators-debug-scopes.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
 
 var Debug = debug.Debug;