diff --git a/src/controllers/StartController.php b/src/controllers/StartController.php
index e4ee252..8757cdb 100644
--- a/src/controllers/StartController.php
+++ b/src/controllers/StartController.php
@@ -72,7 +72,9 @@ public function addAutoloader()
      */
     public function actionUpdate()
     {
-        return $this->passthru('composer', ['update', '-d', '.hidev', '--prefer-source', '--ansi']);
+        if (file_exists('.hidev/composer.json')) {
+            return $this->passthru('composer', ['update', '-d', '.hidev', '--prefer-source', '--ansi']);
+        }
     }
 
     /**