diff --git a/contributors/ttwf_shenzhen/css-shapes/noonnightstorm/submitted/shape-outside-invalid-ellipse-003.html b/contributors/ttwf_shenzhen/css-shapes/noonnightstorm/submitted/shape-outside-invalid-ellipse-003.html
new file mode 100644
index 0000000000..bf12f32732
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+++ b/contributors/ttwf_shenzhen/css-shapes/noonnightstorm/submitted/shape-outside-invalid-ellipse-003.html
@@ -0,0 +1,35 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+	<meta charset="UTF-8">
+	<meta name="flags" content="dom">
+    <meta name="assert" content="shape-outside declaration is invalid if cy in ellipse function is invalid">
+	<title>CSS Shapes Test - Ellipse - invalid cy value</title>
+	<link rel="author" title="noonnightstorm" href="mailto:noonnightstorm@gmail.com">
+	<link rel="help" href="http://www.w3.org/TR/css-shapes/#supported-basic-shapes">
+	<script src="/resources/testharness.js"></script>
+	<script src="/resources/testharnessreport.js"></script>
+	<link rel="stylesheet" href="/resources/testharness.css">
+
+	<style>
+#shape{
+	width: 300px;
+	height: 300px;
+	shape-outside: ellipse(50%, 50, 50%, 50%);
+}
+	</style>
+</head>
+<body>
+
+	<div id="log"></div>
+
+	<div id="shape"></div>
+
+	<script>
+	var obj = document.getElementById('shape');
+	var ellipse = getComputedStyle(obj).shapeOutside;
+	test(function() {assert_equals(ellipse, "auto", "declaration should be Invalid")});
+	</script>
+
+</body>
+</html>
\ No newline at end of file
