diff --git a/event/listener.php b/event/listener.php
index c7ad582..4d28397 100644
--- a/event/listener.php
+++ b/event/listener.php
@@ -128,7 +128,7 @@ public function select_gallery_mode($selected, $cfg_key = '')
foreach ($opt_ary as $opt_key => $opt_value)
{
- $options .= '';
+ $options .= '';
}
return $options;