diff --git a/htdocs/core/tpl/objectline_view.tpl.php b/htdocs/core/tpl/objectline_view.tpl.php
index 3b4bb3cfdcb..c0339c28fc4 100644
--- a/htdocs/core/tpl/objectline_view.tpl.php
+++ b/htdocs/core/tpl/objectline_view.tpl.php
@@ -132,7 +132,7 @@ if (($line->info_bits & 2) == 2) {
 		}
 	}
 } else {
-	$format = (isset($conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE) && $conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE) ? 'dayhour' : 'day';
+	$format = (!empty($conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE) ? 'dayhour' : 'day');
 
 	if ($line->fk_product > 0) {
 		print $form->textwithtooltip($text, $description, 3, '', '', $i, 0, (!empty($line->fk_parent_line) ?img_picto('', 'rightarrow') : ''));