diff --git a/test.js b/test.js
index 3a13418..a5f09b0 100644
--- a/test.js
+++ b/test.js
@@ -34,7 +34,7 @@ var mockServer = createMockServer(() => {
     mocha.run(function(failures) {
       mockServer.close();
       server.close();
-      process.exitCode = failures ? 1 : 0;  // exit with non-zero status if there were failures
+      process.exit(failures ? 1 : 0); // exit with non-zero status if there were failures
     });
   });
 });