diff --git a/app/Helpers/RandomHelper.php b/app/Helpers/RandomHelper.php
deleted file mode 100644
index 65eef25b5..000000000
--- a/app/Helpers/RandomHelper.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-namespace App\Helpers;
-
-class RandomHelper
-{
-    /**
-     * Generate a random string of characters.
-     *
-     * @param  int length The length of the desired string
-     * @return string A random string of characters
-     */
-    public static function generateString($length)
-    {
-        $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0987654321'.time();
-        $charactersLength = strlen($characters);
-        $randomString = '';
-
-        for ($i = $length; $i > 0; $i--) {
-            $randomString .= $characters[rand(0, $charactersLength - 1)];
-        }
-
-        return $randomString;
-    }
-}
diff --git a/app/Http/Controllers/Auth/RegisterController.php b/app/Http/Controllers/Auth/RegisterController.php
index dbb39734f..8e8aeda02 100644
--- a/app/Http/Controllers/Auth/RegisterController.php
+++ b/app/Http/Controllers/Auth/RegisterController.php
@@ -7,7 +7,6 @@ use App\User;
 use Validator;
 use App\Account;
 use Carbon\Carbon;
-use App\Helpers\RandomHelper;
 use App\Jobs\SendNewUserAlert;
 use App\Http\Controllers\Controller;
 use Illuminate\Foundation\Auth\RegistersUsers;
@@ -93,7 +92,7 @@ class RegisterController extends Controller
 
         // create a new account
         $account = new Account;
-        $account->api_key = RandomHelper::generateString(30);
+        $account->api_key = str_random(30);
         $account->created_at = Carbon::now();
         $account->save();
 
diff --git a/app/Http/Controllers/SettingsController.php b/app/Http/Controllers/SettingsController.php
index 0d3115aec..7c104c2e9 100644
--- a/app/Http/Controllers/SettingsController.php
+++ b/app/Http/Controllers/SettingsController.php
@@ -9,7 +9,6 @@ use App\ImportJob;
 use Carbon\Carbon;
 use App\Invitation;
 use Illuminate\Http\Request;
-use App\Helpers\RandomHelper;
 use App\Jobs\SendNewUserAlert;
 use App\Jobs\ExportAccountAsSQL;
 use App\Jobs\AddContactFromVCard;
@@ -265,7 +264,7 @@ class SettingsController extends Controller
             + [
                 'invited_by_user_id' => auth()->user()->id,
                 'account_id' => auth()->user()->account_id,
-                'invitation_key' => RandomHelper::generateString(100),
+                'invitation_key' => str_random(100),
             ]
         );
 
diff --git a/database/factories/ModelFactory.php b/database/factories/ModelFactory.php
index 36705add9..a12e8991a 100644
--- a/database/factories/ModelFactory.php
+++ b/database/factories/ModelFactory.php
@@ -11,8 +11,6 @@
 |
 */
 
-use App\Helpers\RandomHelper;
-
 $factory->define(App\User::class, function (Faker\Generator $faker) {
     return [
         'first_name' => $faker->firstName,
@@ -28,7 +26,7 @@ $factory->define(App\User::class, function (Faker\Generator $faker) {
 
 $factory->define(App\Account::class, function (Faker\Generator $faker) {
     return [
-        'api_key' => RandomHelper::generateString(30),
+        'api_key' => str_random(30),
     ];
 });
 
diff --git a/tests/Helper/RandomHelperTest.php b/tests/Helper/RandomHelperTest.php
deleted file mode 100644
index 8156b4d57..000000000
--- a/tests/Helper/RandomHelperTest.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace Tests\Helper;
-
-use Tests\TestCase;
-use App\Helpers\RandomHelper;
-
-class RandomHelperTest extends TestCase
-{
-    public function testThatGenerateStringReturnsTheRightLength()
-    {
-        $randomString = RandomHelper::generateString(30);
-        $this->assertTrue(30 == strlen($randomString));
-    }
-
-    public function testThatGenerateStringIsNotEmpty()
-    {
-        $randomString = RandomHelper::generateString(30);
-        $this->assertNotNull($randomString);
-    }
-}
diff --git a/tests/Unit/ImportVCardsTest.php b/tests/Unit/ImportVCardsTest.php
index 675b82f40..2f4512d41 100644
--- a/tests/Unit/ImportVCardsTest.php
+++ b/tests/Unit/ImportVCardsTest.php
@@ -8,7 +8,6 @@ use App\Contact;
 use App\Country;
 use Mockery as m;
 use Tests\TestCase;
-use App\Helpers\RandomHelper;
 use Illuminate\Foundation\Testing\DatabaseTransactions;
 
 class ImportVCardsTest extends TestCase
@@ -96,7 +95,7 @@ class ImportVCardsTest extends TestCase
         $user->password = bcrypt('secret');
 
         $account = new Account();
-        $account->api_key = RandomHelper::generateString(30);
+        $account->api_key = str_random(30);
         $account->save();
 
         $user->account_id = $account->id;