diff --git a/test/function/samples/namespace-to-string-tag/_config.js b/test/function/samples/namespace-to-string-tag/_config.js
new file mode 100644
index 00000000000..8d9d2e50a7d
--- /dev/null
+++ b/test/function/samples/namespace-to-string-tag/_config.js
@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'namespace export should have @@toStringTag value "Module" #4336'
+};
diff --git a/test/function/samples/namespace-to-string-tag/foo.js b/test/function/samples/namespace-to-string-tag/foo.js
new file mode 100644
index 00000000000..c155820bf77
--- /dev/null
+++ b/test/function/samples/namespace-to-string-tag/foo.js
@@ -0,0 +1 @@
+export const foo = 'bar';
diff --git a/test/function/samples/namespace-to-string-tag/main.js b/test/function/samples/namespace-to-string-tag/main.js
new file mode 100644
index 00000000000..5fb825fedfc
--- /dev/null
+++ b/test/function/samples/namespace-to-string-tag/main.js
@@ -0,0 +1,3 @@
+import * as ns from './foo.js';
+
+assert.strictEqual(ns[Symbol.toStringTag], 'Module');