diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 30963d12..8e32971e 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -2512,11 +2512,6 @@
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-2.0.0.tgz",
       "dev": true
     },
-    "file-exists": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/file-exists/-/file-exists-1.0.0.tgz",
-      "dev": true
-    },
     "file-name": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/file-name/-/file-name-0.1.0.tgz",
diff --git a/package.json b/package.json
index c1f24d10..01e17ca4 100644
--- a/package.json
+++ b/package.json
@@ -106,7 +106,6 @@
     "eslint-plugin-node": "6.0.0",
     "eslint-plugin-promise": "3.6.0",
     "eslint-plugin-standard": "3.0.1",
-    "file-exists": "1.0.0",
     "html-angular-validate": "0.1.9",
     "mocha": "3.2.0",
     "mochainon": "1.0.0",
diff --git a/tests/image-stream/tester.js b/tests/image-stream/tester.js
index c280116b..beb1e054 100644
--- a/tests/image-stream/tester.js
+++ b/tests/image-stream/tester.js
@@ -19,8 +19,7 @@
 const m = require('mochainon')
 const _ = require('lodash')
 const Bluebird = require('bluebird')
-const fileExists = require('file-exists')
-const fs = Bluebird.promisifyAll(require('fs'))
+const fs = require('fs')
 const os = require('os')
 const path = require('path')
 const imageStream = require('../../lib/image-stream/index')
@@ -35,9 +34,14 @@ const doFilesContainTheSameData = (file1, file2) => {
 }
 
 const deleteIfExists = (file) => {
-  return Bluebird.try(function () {
-    if (fileExists(file)) {
-      return fs.unlinkAsync(file)
+  return Bluebird.try(() => {
+    try {
+      fs.accessSync(file)
+      fs.unlinkSync(file)
+    } catch (error) {
+      if (error.code !== 'ENOENT') {
+        return Bluebird.reject(error)
+      }
     }
 
     return Bluebird.resolve()