diff --git a/LocalSettings.php.tmpl b/LocalSettings.php.tmpl
index f55d0b6..0594cc3 100644
--- a/LocalSettings.php.tmpl
+++ b/LocalSettings.php.tmpl
@@ -205,3 +205,8 @@ $wgSMTP = [
     #'password' => 'my_password'       // Password to use for SMTP authentication (if being used)
 ];
 {{ end }}
+
+$wgFileExtensions = array(
+    'png', 'gif', 'jpg', 'jpeg', 'doc', 'xls', 'mpp', 'pdf', 'ppt', 'tiff',
+    'bmp', 'docx', 'xlsx', 'pptx', 'ps', 'odt', 'ods', 'odp', 'odg'
+);