diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 0bd13869ce8..0d7f18e1c75 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -1088,12 +1088,6 @@ function pdf_getlinedesc($object,$i,$outputlangs,$hideref=0,$hidedesc=0,$issuppl
 	if ($idprod)
 	{
 		$prodser->fetch($idprod);
-
-        //can change ref in hook
-        if(isset($object->lines[$i]->ref)){
-        $prodser->ref = $object->lines[$i]->ref;
-        }
-
 		// If a predefined product and multilang and on other lang, we renamed label with label translated
 		if (! empty($conf->global->MAIN_MULTILANGS) && ($outputlangs->defaultlang != $langs->defaultlang))
 		{