diff --git a/tests/cases/conformance/externalModules/umd9.ts b/tests/cases/conformance/externalModules/umd9.ts
new file mode 100644
index 00000000000..459227e9454
--- /dev/null
+++ b/tests/cases/conformance/externalModules/umd9.ts
@@ -0,0 +1,14 @@
+// @module: commonjs
+// @noImplicitReferences: true
+// @allowUmdGlobalAccess: true
+
+// @filename: foo.d.ts
+declare class Thing {
+  foo(): number;
+}
+export = Thing;
+export as namespace Foo;
+
+// @filename: a.ts
+/// <reference path="foo.d.ts" />
+export const x = Foo; // OK in value position because allowUmdGlobalAccess: true