diff --git a/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php b/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
index fc242e47e52..087b4a373aa 100644
--- a/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
+++ b/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
@@ -29,6 +29,7 @@
 require_once DOL_DOCUMENT_ROOT.'/core/modules/expedition/modules_expedition.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/company.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/pdf.lib.php';
+require_once DOL_DOCUMENT_ROOT.'/core/lib/product.lib.php';
 
 
 /**