diff --git a/shop.php b/shop.php
index e69989a68..b81c99afa 100644
--- a/shop.php
+++ b/shop.php
@@ -1,6 +1,7 @@
 <?
 include_once("./_common.php");
 include_once(G4_LIB_PATH.'/latest.lib.php');
+include_once(G4_LIB_PATH.'/thumbnail.lib.php');
 
 define("_INDEX_", TRUE);