diff --git a/test/travis-ufuzz.js b/test/travis-ufuzz.js
index c4f918ad..f84ed684 100644
--- a/test/travis-ufuzz.js
+++ b/test/travis-ufuzz.js
@@ -1,5 +1,9 @@
 "use strict";
 
+var child_process = require("child_process");
+var https = require("https");
+var url = require("url");
+
 var period = 45 * 60 * 1000;
 var wait = 2 * 60 * 1000;
 var ping = 5 * 60 * 1000;
@@ -10,16 +14,16 @@ if (process.argv[2] == "run") {
     var branch = process.argv[3] || "v" + require("../package.json").version;
     var repository = encodeURIComponent(process.argv[4] || "mishoo/UglifyJS2");
     var concurrency = process.argv[5] || 1;
-    (function init() {
-        setTimeout(init, (period + wait) / concurrency);
-        var options = require("url").parse("https://api.travis-ci.org/repo/" + repository + "/requests");
+    (function request() {
+        setTimeout(request, (period + wait) / concurrency);
+        var options = url.parse("https://api.travis-ci.org/repo/" + repository + "/requests");
         options.method = "POST";
         options.headers = {
             "Content-Type": "application/json",
             "Travis-API-Version": 3,
             "Authorization": "token " + token
         };
-        require("https").request(options, function(res) {
+        https.request(options, function(res) {
             console.log("HTTP", res.statusCode);
             console.log(JSON.stringify(res.headers, null, 2));
             console.log();
@@ -44,7 +48,7 @@ if (process.argv[2] == "run") {
 }
 
 function spawn() {
-    var child = require("child_process").spawn("node", [
+    var child = child_process.spawn("node", [
         "--max-old-space-size=2048",
         "test/ufuzz"
     ], {