diff --git a/htdocs/cashdesk/tpl/facturation1.tpl.php b/htdocs/cashdesk/tpl/facturation1.tpl.php
index 2d7d170f22e..76055fb635e 100644
--- a/htdocs/cashdesk/tpl/facturation1.tpl.php
+++ b/htdocs/cashdesk/tpl/facturation1.tpl.php
@@ -44,8 +44,8 @@ $langs->load("cashdesk");
 			<!-- Affichage de la reference et de la designation -->
 			<td><input class="texte_ref" type="text" id ="txtRef" name="txtRef" value="<?php echo $obj_facturation->ref() ?>"
 				onchange="javascript: setSource('REF');"
-				onkeyup="javascript: verifResultat('resultats_dhtml', this.value, <?php echo (! empty($conf->global->BARCODE_USE_SEARCH_TO_SELECT)?(int)$conf->global->BARCODE_USE_SEARCH_TO_SELECT:1) ?>);"
-				onfocus="javascript: this.select(); verifResultat('resultats_dhtml', this.value, <?php echo (! empty($conf->global->BARCODE_USE_SEARCH_TO_SELECT)?(int)$conf->global->BARCODE_USE_SEARCH_TO_SELECT:1) ?>);"
+				onkeyup="javascript: verifResultat('resultats_dhtml', this.value, <?php echo (isset($conf->global->BARCODE_USE_SEARCH_TO_SELECT) ? (int) $conf->global->BARCODE_USE_SEARCH_TO_SELECT : 1) ?>);"
+				onfocus="javascript: this.select(); verifResultat('resultats_dhtml', this.value, <?php echo (isset($conf->global->BARCODE_USE_SEARCH_TO_SELECT) ? (int) $conf->global->BARCODE_USE_SEARCH_TO_SELECT : 1) ?>);"
 				onBlur="javascript: document.getElementById('resultats_dhtml').innerHTML = '';"/>
 			</td>
 			<td class="select_design">