diff --git a/bootstrap/chkenv.php b/bootstrap/chkenv.php
index d079d15a..be6f4a75 100644
--- a/bootstrap/chkenv.php
+++ b/bootstrap/chkenv.php
@@ -1,5 +1,7 @@
 <?php
 
+use Illuminate\Encryption\Encrypter;
+
 (function () {
     function die_with_utf8_encoding($error)
     {
@@ -14,6 +16,17 @@
         );
     }
 
+    $envPath = __DIR__.'/../.env';
+    if (!file_exists($envPath)) {
+        copy(__DIR__.'/../.env.example', $envPath);
+    }
+
+    $envFile = file_get_contents($envPath);
+    if (preg_match('/APP_KEY\s*=\s*\n/', $envFile)) {
+        $key = 'base64:'.base64_encode(Encrypter::generateKey('AES-256-CBC'));
+        file_put_contents($envPath, preg_replace('/APP_KEY\s*=\s*/', 'APP_KEY='.$key."\n\n", $envFile));
+    }
+
     if (!empty(ini_get('disable_functions'))) {
         die_with_utf8_encoding(
             '[Error] Please don\'t disable any functions, which is specified in "php.ini" file.<br>'.
diff --git a/public/index.php b/public/index.php
index a49ecf2b..b7be5f35 100755
--- a/public/index.php
+++ b/public/index.php
@@ -16,6 +16,15 @@ define('LARAVEL_START', microtime(true));
 
 require __DIR__.'/../vendor/autoload.php';
 
+/*
+|--------------------------------------------------------------------------
+| Environment Check
+|--------------------------------------------------------------------------
+*/
+if (!file_exists(__DIR__.'/../storage/install.lock')) {
+    require __DIR__.'/../bootstrap/chkenv.php';
+}
+
 /*
 |--------------------------------------------------------------------------
 | Turn On The Lights