diff --git a/netwerk/test/httpserver/test/test_load_module.js b/netwerk/test/httpserver/test/test_load_module.js
index e74cc842b9fd..8233833fa1cf 100644
--- a/netwerk/test/httpserver/test/test_load_module.js
+++ b/netwerk/test/httpserver/test/test_load_module.js
@@ -8,7 +8,7 @@ function run_test() {
   Components.utils.import("resource://testing-common/httpd.js");
 
   let server = new HttpServer();
-  server.start(8080);
+  server.start(-1);
 
   do_test_pending();