diff --git a/test/intl402/Locale/prototype/toStringTag/toString-removed-tag.js b/test/intl402/Locale/prototype/toStringTag/toString-removed-tag.js
new file mode 100644
index 0000000000..02d9bf7854
--- /dev/null
+++ b/test/intl402/Locale/prototype/toStringTag/toString-removed-tag.js
@@ -0,0 +1,18 @@
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.locale.prototype-@@tostringtag
+description: >
+    Checks Object.prototype.toString with Intl.Locale objects.
+info: |
+    Intl.Locale.prototype[ @@toStringTag ]
+
+    The initial value of the @@toStringTag property is the string value "Intl.Locale".
+features: [Intl.Locale, Symbol.toStringTag]
+---*/
+
+delete Intl.Locale.prototype[Symbol.toStringTag];
+
+assert.sameValue(Object.prototype.toString.call(Intl.Locale.prototype), "[object Object]");
+assert.sameValue(Object.prototype.toString.call(new Intl.Locale("en")), "[object Object]");
diff --git a/test/intl402/Locale/prototype/toStringTag/toString.js b/test/intl402/Locale/prototype/toStringTag/toString.js
new file mode 100644
index 0000000000..a7218aa1ca
--- /dev/null
+++ b/test/intl402/Locale/prototype/toStringTag/toString.js
@@ -0,0 +1,16 @@
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.locale.prototype-@@tostringtag
+description: >
+    Checks Object.prototype.toString with Intl.Locale objects.
+info: |
+    Intl.Locale.prototype[ @@toStringTag ]
+
+    The initial value of the @@toStringTag property is the string value "Intl.Locale".
+features: [Intl.Locale, Symbol.toStringTag]
+---*/
+
+assert.sameValue(Object.prototype.toString.call(Intl.Locale.prototype), "[object Intl.Locale]");
+assert.sameValue(Object.prototype.toString.call(new Intl.Locale("en")), "[object Intl.Locale]");