diff --git a/acp/index.php b/acp/index.php
index 43e3da7..c772fee 100644
--- a/acp/index.php
+++ b/acp/index.php
@@ -25,6 +25,9 @@
 	$mcache->connect('127.0.0.1', 11211) or exit('Ошибка подключения Memcache');
 
     // Composer
+    if (!file_exists(ROOT.'vendor/autoload.php')) {
+        die('Please <a href="https://getcomposer.org/download/" target="_blank" rel="noreferrer" style="color:#0a25bb;">install composer</a> and run <code style="background:#222;color:#00e01f;padding:2px 6px;border-radius:3px;">composer install</code>');
+    }
     require(ROOT.'vendor/autoload.php');
 
 	// Настройки
diff --git a/index.php b/index.php
index a3e4e94..a2c1682 100644
--- a/index.php
+++ b/index.php
@@ -26,6 +26,9 @@
 	$mcache->connect('127.0.0.1', 11211) or exit('Ошибка подключения Memcache');
 
     // Composer
+    if (!file_exists(ROOT.'vendor/autoload.php')) {
+        die('Please <a href="https://getcomposer.org/download/" target="_blank" rel="noreferrer" style="color:#0a25bb;">install composer</a> and run <code style="background:#222;color:#00e01f;padding:2px 6px;border-radius:3px;">composer install</code>');
+    }
     require(ROOT.'vendor/autoload.php');
 
 	// Настройки