diff --git a/install.php b/install.php
index 802b90179..334fea160 100644
--- a/install.php
+++ b/install.php
@@ -251,7 +251,7 @@ if (!is_file(BB_ROOT . 'vendor/autoload.php')) {
     if (is_file(BB_ROOT . 'composer.phar')) {
         out('- Installing dependencies...', 'info');
         runProcess('php ' . BB_ROOT . 'composer.phar install --no-interaction --no-ansi');
-        out("- Completed! Composer dependencies are installed!\n", 'success');
+        define('COMPOSER_COMPLETED', true);
     } else {
         out('- composer.phar not found. Please, download it (composer.phar) manually', 'error');
         exit;
@@ -261,6 +261,15 @@ if (!is_file(BB_ROOT . 'vendor/autoload.php')) {
     out("- Note: Remove 'vendor' folder if you want to re-install dependencies\n");
 }
 
+// Check composer dependencies
+if (defined('COMPOSER_COMPLETED')) {
+    if (is_file(BB_ROOT . 'vendor/autoload.php')) {
+        out("- Completed! Composer dependencies are installed!\n", 'success');
+    } else {
+        exit;
+    }
+}
+
 // Preparing ENV
 if (is_file(BB_ROOT . '.env.example') && !is_file(BB_ROOT . '.env')) {
     if (copy(BB_ROOT . '.env.example', BB_ROOT . '.env')) {