diff --git a/src/Composer/Installers/MediaWikiInstaller.php b/src/Composer/Installers/MediaWikiInstaller.php
index 01008c63..f5a8957e 100644
--- a/src/Composer/Installers/MediaWikiInstaller.php
+++ b/src/Composer/Installers/MediaWikiInstaller.php
@@ -4,6 +4,7 @@
 class MediaWikiInstaller extends BaseInstaller
 {
     protected $locations = array(
+        'core' => 'core/',
         'extension' => 'extensions/{$name}/',
         'skin' => 'skins/{$name}/',
     );