diff --git a/test/language/statements/async-generator/yield-star-async-next.js b/test/language/statements/async-generator/yield-star-async-next.js
index 3f4e2ef96a..9eb6ec80a5 100644
--- a/test/language/statements/async-generator/yield-star-async-next.js
+++ b/test/language/statements/async-generator/yield-star-async-next.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with async iterator and next()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with async iterator and next()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -44,7 +47,8 @@
       c. Return ! AsyncGeneratorResolve(generator, value, done).
     ...
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];
diff --git a/test/language/statements/async-generator/yield-star-async-return.js b/test/language/statements/async-generator/yield-star-async-return.js
index 7fe06a6dc0..f11d34abcf 100644
--- a/test/language/statements/async-generator/yield-star-async-return.js
+++ b/test/language/statements/async-generator/yield-star-async-return.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with async iterator and return()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with async iterator and return()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -33,7 +36,8 @@
       c. Return ! AsyncGeneratorResolve(generator, value, done).
     ...
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];
diff --git a/test/language/statements/async-generator/yield-star-async-throw.js b/test/language/statements/async-generator/yield-star-async-throw.js
index 7680503ff1..0e9feeb774 100644
--- a/test/language/statements/async-generator/yield-star-async-throw.js
+++ b/test/language/statements/async-generator/yield-star-async-throw.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with async iterator and throw()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with async iterator and throw()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -30,7 +33,8 @@
       c. Return ! AsyncGeneratorResolve(generator, value, done).
     ...
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];
diff --git a/test/language/statements/async-generator/yield-star-sync-next.js b/test/language/statements/async-generator/yield-star-sync-next.js
index 3068f5429e..b57992c2e0 100644
--- a/test/language/statements/async-generator/yield-star-sync-next.js
+++ b/test/language/statements/async-generator/yield-star-sync-next.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with sync iterator and next()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with sync iterator and next()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -56,7 +59,8 @@
 
     1. Return ! CreateIterResultObject(value, F.[[Done]]).
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];
diff --git a/test/language/statements/async-generator/yield-star-sync-return.js b/test/language/statements/async-generator/yield-star-sync-return.js
index e28ea802ec..7252db75cb 100644
--- a/test/language/statements/async-generator/yield-star-sync-return.js
+++ b/test/language/statements/async-generator/yield-star-sync-return.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with sync iterator and return()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with sync iterator and return()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -42,7 +45,8 @@
         onFulfilled, undefined, promiseCapability).
     ...
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];
diff --git a/test/language/statements/async-generator/yield-star-sync-throw.js b/test/language/statements/async-generator/yield-star-sync-throw.js
index 7c0ada620a..c67a73b790 100644
--- a/test/language/statements/async-generator/yield-star-sync-throw.js
+++ b/test/language/statements/async-generator/yield-star-sync-throw.js
@@ -1,8 +1,11 @@
+// Copyright 2017 Tooru Fujisawa. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
 /*---
- author: Tooru Fujisawa [:arai] <arai_a@mac.com>
- esid: pending
- description: execution order for yield* with sync iterator and throw()
- info: >
+author: Tooru Fujisawa [:arai] <arai_a@mac.com>
+esid: pending
+description: execution order for yield* with sync iterator and throw()
+info: |
     YieldExpression: yield * AssignmentExpression
 
     ...
@@ -40,7 +43,8 @@
         onFulfilled, undefined, promiseCapability).
     ...
 
- flags: [async]
+flags: [async]
+features: [async-iteration]
 ---*/
 
 var log = [];