diff --git a/admin/plugin.php b/admin/plugin.php
index bd3916953..7738d6fe8 100644
--- a/admin/plugin.php
+++ b/admin/plugin.php
@@ -14,7 +14,7 @@ if( !defined("PHPWG_ROOT_PATH") )
 include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
 check_status(ACCESS_ADMINISTRATOR);
 
-$sections = explode('/', $_GET['section'] );
+$sections = explode('/', $_GET['section'] ?? '');
 for ($i=0; $i<count($sections); $i++)
 {
   if (empty($sections[$i]))
@@ -56,4 +56,4 @@ else
 {
   die('Missing file '.htmlentities($filename));
 }
-?>
\ No newline at end of file
+?>