diff --git a/tests/cases/fourslash/server/completionEntryDetailAcrossFiles02.ts b/tests/cases/fourslash/server/completionEntryDetailAcrossFiles02.ts
new file mode 100644
index 0000000000..2c5e53ea22
--- /dev/null
+++ b/tests/cases/fourslash/server/completionEntryDetailAcrossFiles02.ts
@@ -0,0 +1,20 @@
+/// <reference path="../fourslash.ts"/>
+
+// @allowNonTsExtensions: true
+// @Filename: a.js
+//// /**
+////  * Modify the parameter
+////  * @param {string} p1
+////  */
+//// var foo = function (p1) { }
+//// module.exports.foo = foo;
+//// fo/*1*/
+
+// @Filename: b.ts
+//// import a = require("./a");
+//// a.fo/*2*/
+
+goTo.marker('1');
+verify.completionEntryDetailIs("foo", "var foo: (p1: string) => void", "Modify the parameter");
+goTo.marker('2');
+verify.completionEntryDetailIs("foo", "(property) a.foo: (p1: string) => void", "Modify the parameter");