diff --git a/lib/XMLHttpRequest.js b/lib/XMLHttpRequest.js
index f37edf0..b747fc5 100644
--- a/lib/XMLHttpRequest.js
+++ b/lib/XMLHttpRequest.js
@@ -14,6 +14,7 @@
 var fs = require('fs');
 var os = require('os');
 var path = require('path');
+var fileURLToPath = require('url').fileURLToPath;
 var spawn = require('child_process').spawn;
 /**
  * Constants
@@ -675,7 +676,7 @@ function XMLHttpRequest(opts) {
       }
 
       if (settings.async) {
-        fs.readFile(unescape(url.pathname), function(error, data) {
+        fs.readFile(fileURLToPath(url), function(error, data) {
           if (error) {
             handleError(error, error.errno || -1);
           } else {
@@ -689,7 +690,7 @@ function XMLHttpRequest(opts) {
       } else {
         try {
           dataMap.status = 200;
-          const syncData = fs.readFileSync(unescape(url.pathname));
+          const syncData = fs.readFileSync(fileURLToPath(url));
           // Use self.responseType to create the correct self.responseType, self.response.
           dataMap.responseURL = settings.url;
           createResponse(syncData, "");
@@ -931,8 +932,8 @@ function XMLHttpRequest(opts) {
           + "      response.destroy();"
           + "      ++redirects_count;"
           + "      if (redirects_count > maxRedirects) {"
-          + "        fs.writeFileSync('" + contentFile + "', 'NODE-XMLHTTPREQUEST-ERROR-REDIRECT: Too many redirects', 'utf8');"
-          + "        fs.unlinkSync('" + syncFile + "');"
+          + "        fs.writeFileSync(" + JSON.stringify(contentFile) + ", 'NODE-XMLHTTPREQUEST-ERROR-REDIRECT: Too many redirects', 'utf8');"
+          + "        fs.unlinkSync(" + JSON.stringify(syncFile) + ");"
           + "        return;"
           + "      }"
           + "      try {"
@@ -940,8 +941,8 @@ function XMLHttpRequest(opts) {
           + "        if (url.protocol !== 'https:' && url.protocol !== 'http:') throw 'bad protocol';"
           + "      }"
           + "      catch (e) {"
-          + "        fs.writeFileSync('" + contentFile + "', 'NODE-XMLHTTPREQUEST-ERROR-REDIRECT: Unsafe redirect', 'utf8');"
-          + "        fs.unlinkSync('" + syncFile + "');"
+          + "        fs.writeFileSync(" + JSON.stringify(contentFile) + ", 'NODE-XMLHTTPREQUEST-ERROR-REDIRECT: Unsafe redirect', 'utf8');"
+          + "        fs.unlinkSync(" + JSON.stringify(syncFile) + ");"
           + "        return;"
           + "      };"
           + "      isSsl = url.protocol === 'https:';"
@@ -964,17 +965,17 @@ function XMLHttpRequest(opts) {
           + "    });"
           + "    response.on('end', function() {"
           + "      responseData = concat(buffers);"
-          + "      fs.writeFileSync('" + contentFile + "', JSON.stringify({err: null, data: { url: url.href, statusCode: response.statusCode, statusText: response.statusMessage, headers: response.headers }}), 'utf8');"
-          + "      fs.writeFileSync('" + contentFile + ".bin', responseData);"
-          + "      fs.unlinkSync('" + syncFile + "');"
+          + "      fs.writeFileSync(" + JSON.stringify(contentFile) + ", JSON.stringify({err: null, data: { url: url.href, statusCode: response.statusCode, statusText: response.statusMessage, headers: response.headers }}), 'utf8');"
+          + "      fs.writeFileSync(" + JSON.stringify(contentFile + '.bin') + ", responseData);"
+          + "      fs.unlinkSync(" + JSON.stringify(syncFile) + ");"
           + "    });"
           + "    response.on('error', function(error) {"
-          + "      fs.writeFileSync('" + contentFile + "', 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
-          + "      fs.unlinkSync('" + syncFile + "');"
+          + "      fs.writeFileSync(" + JSON.stringify(contentFile) + ", 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
+          + "      fs.unlinkSync(" + JSON.stringify(syncFile) + ");"
           + "    });"
           + "  }).on('error', function(error) {"
-          + "    fs.writeFileSync('" + contentFile + "', 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
-          + "    fs.unlinkSync('" + syncFile + "');"
+          + "    fs.writeFileSync(" + JSON.stringify(contentFile) + ", 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
+          + "    fs.unlinkSync(" + JSON.stringify(syncFile) + ");"
           + "  });"
           + "  " + (data ? "req.write('" + JSON.stringify(data).slice(1,-1).replace(/'/g, "\\'") + "');":"")
           + "  req.end();"
diff --git a/tests/test-disallow-fs-resources.js b/tests/test-disallow-fs-resources.js
index a244849..44fd270 100644
--- a/tests/test-disallow-fs-resources.js
+++ b/tests/test-disallow-fs-resources.js
@@ -1,4 +1,5 @@
 var assert = require("assert")
+  , path = require("path")
   , XMLHttpRequest = require("../lib/XMLHttpRequest").XMLHttpRequest
   , xhr;
 
@@ -19,7 +20,11 @@ xhr.onreadystatechange = function() {
 };
 
 // Async
-var url = "file://" + __dirname + "/testdata.txt";
+var p = (__dirname + "/testdata.txt").replaceAll(path.sep, path.posix.sep);
+if (!p.startsWith('/')) {
+  p = "/" + p;
+}
+var url = "file://" + p;
 xhr.open("GET", url);
 xhr.send();
 
diff --git a/tests/test-max-redirects.js b/tests/test-max-redirects.js
index 1afd3ec..82251ee 100644
--- a/tests/test-max-redirects.js
+++ b/tests/test-max-redirects.js
@@ -10,11 +10,11 @@ var runTest = function () {
     let xhr = new XMLHttpRequest({ maxRedirects: 10 });
     xhr.open("GET", "http://localhost:8888/redirectingResource/10", false);
     xhr.onreadystatechange = function() {
-    if (xhr.readyState === 4) {
-      // assert.equal(xhr.getRequestHeader('Location'), '');
-      assert.equal(xhr.responseText, "Hello World");
-      console.log("safe redirects count: done");
-    }
+      if (xhr.readyState === 4) {
+        // assert.equal(xhr.getRequestHeader('Location'), '');
+        assert.equal(xhr.responseText, "Hello World");
+        console.log("safe redirects count: done");
+      }
     };
     xhr.send();
   } catch(e) {
diff --git a/tests/test-request-protocols-binary-data.js b/tests/test-request-protocols-binary-data.js
index 1a10344..657ef12 100644
--- a/tests/test-request-protocols-binary-data.js
+++ b/tests/test-request-protocols-binary-data.js
@@ -3,7 +3,7 @@
  * Use xhr.responseType = "arraybuffer".
  */
 'use strict';
-var XMLHttpRequest = require("../lib/XMLHttpRequest").XMLHttpRequest
+var XMLHttpRequest = require("../lib/XMLHttpRequest").XMLHttpRequest;
 
 const supressConsoleOutput = true;
 function log (_) {