diff --git a/types/node-static/node-static-tests.ts b/types/node-static/node-static-tests.ts
index 4bf2673ab4..471a8fde50 100644
--- a/types/node-static/node-static-tests.ts
+++ b/types/node-static/node-static-tests.ts
@@ -2,6 +2,6 @@ import {Server, version, mime} from 'node-static';
 
 let server = new Server(__dirname);
 let pathname = server.resolve('./tsconfig.json');
-let mimetype = mime.lookup(pathname);
+let mimetype = mime.lookup(pathname, '');
 let versionNum = version.join('.');
 console.log(`The node-static server constructed an instance of itself, fetched the mimetype of ${pathname} (${mimetype}), and has a version of ${versionNum}! The package is working.`);