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diff --git a/test/language/literals/regexp/u-invalid-range-lookahead.js b/test/language/literals/regexp/u-invalid-range-lookahead.js
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+++ b/test/language/literals/regexp/u-invalid-range-lookahead.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-regular-expressions-patterns
+es6id: B.1.4
+description: Quantifiable assertions disallowed with `u` flag
+info: |
+    The `u` flag precludes quantifiable assertions (even when Annex B is
+    honored)
+
+    Term[U] ::
+         [~U] QuantifiableAssertion Quantifier
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+/.(?=.){2,3}/u;