diff --git a/administrator/index.php b/administrator/index.php
index b074d1f45e933..6f1c77ae13a0c 100644
--- a/administrator/index.php
+++ b/administrator/index.php
@@ -11,6 +11,11 @@
 	die('Your host needs to use PHP 5.3.10 or higher to run this version of Joomla!');
 }
 
+if (file_exists($composer = __DIR__ . '/../vendor/autoload.php'))
+{
+	require $composer;
+}
+
 /**
  * Constant that is checked in included files to prevent direct access.
  * define() is used in the installation folder rather than "const" to not error for PHP 5.2 and lower
diff --git a/index.php b/index.php
index bbbae61c8738c..f9000cc0f150c 100644
--- a/index.php
+++ b/index.php
@@ -11,6 +11,11 @@
 	die('Your host needs to use PHP 5.3.10 or higher to run this version of Joomla!');
 }
 
+if (file_exists($composer = __DIR__ . '/vendor/autoload.php'))
+{
+	require $composer;
+}
+
 /**
  * Constant that is checked in included files to prevent direct access.
  * define() is used in the installation folder rather than "const" to not error for PHP 5.2 and lower