diff --git a/htdocs/core/tpl/objectline_add.tpl.php b/htdocs/core/tpl/objectline_add.tpl.php
index a9e01947861..6131a644c99 100644
--- a/htdocs/core/tpl/objectline_add.tpl.php
+++ b/htdocs/core/tpl/objectline_add.tpl.php
@@ -192,10 +192,11 @@ if (! empty($conf->margin->enabled)) {
 <tr id="service_duration_area" <?php echo $bcnd[$var]; ?>>
 	<td colspan="<?php echo $colspan; ?>">
 	<?php
+	$hourmin=(isset($conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE)?$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE:'');
 	echo $langs->trans('ServiceLimitedDuration').' '.$langs->trans('From').' ';
-	echo $form->select_date('','date_start',$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,1,"addproduct");
+	echo $form->select_date('','date_start',$hourmin,$hourmin,1,"addproduct");
 	echo ' '.$langs->trans('to').' ';
-	echo $form->select_date('','date_end',$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,1,"addproduct");
+	echo $form->select_date('','date_end',$hourmin,$hourmin,1,"addproduct");
 	?>
 	</td>
 </tr>
diff --git a/htdocs/core/tpl/objectline_edit.tpl.php b/htdocs/core/tpl/objectline_edit.tpl.php
index 6cfbd4d802e..693a591e5fa 100644
--- a/htdocs/core/tpl/objectline_edit.tpl.php
+++ b/htdocs/core/tpl/objectline_edit.tpl.php
@@ -135,9 +135,10 @@
 <tr id="service_duration_area" <?php echo $bc[$var]; ?>>
 	<td colspan="11"><?php echo $langs->trans('ServiceLimitedDuration').' '.$langs->trans('From').' '; ?>
 	<?php
-	echo $form->select_date($line->date_start,'date_start',$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$line->date_start?0:1,"updateligne");
+	$hourmin=(isset($conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE)?$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE:'');
+	echo $form->select_date($line->date_start,'date_start',$hourmin,$hourmin,$line->date_start?0:1,"updateligne");
 	echo ' '.$langs->trans('to').' ';
-	echo $form->select_date($line->date_end,'date_end',$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$conf->global->MAIN_USE_HOURMIN_IN_DATE_RANGE,$line->date_end?0:1,"updateligne");
+	echo $form->select_date($line->date_end,'date_end',$hourmin,$hourmin,$line->date_end?0:1,"updateligne");
 	?>
 	</td>
 </tr>