diff --git a/htdocs/accountancy/customer/lines.php b/htdocs/accountancy/customer/lines.php
index 1a93ef0b604..af80d70f043 100644
--- a/htdocs/accountancy/customer/lines.php
+++ b/htdocs/accountancy/customer/lines.php
@@ -310,8 +310,8 @@ if ($result) {
 	print '<td class="liste_titre"><input type="text" class="flat maxwidth25" name="search_lineid" value="' . dol_escape_htmltag($search_lineid) . '""></td>';
 	print '<td class="liste_titre"><input type="text" class="flat maxwidth50" name="search_invoice" value="' . dol_escape_htmltag($search_invoice) . '"></td>';
 	print '<td class="liste_titre center nowraponall">';
-	if (! empty($conf->global->MAIN_LIST_FILTER_ON_DAY)) print '<input class="flat" type="text" size="1" maxlength="2" name="search_day" value="'.dol_escape_htmltag($search_day).'">';
-   	print '<input class="flat" type="text" size="1" maxlength="2" name="search_month" value="'.dol_escape_htmltag($search_month).'">';
+	if (! empty($conf->global->MAIN_LIST_FILTER_ON_DAY)) print '<input class="flat valignmiddle" type="text" size="1" maxlength="2" name="search_day" value="'.dol_escape_htmltag($search_day).'">';
+   	print '<input class="flat valignmiddle" type="text" size="1" maxlength="2" name="search_month" value="'.dol_escape_htmltag($search_month).'">';
    	$formother->select_year($search_year,'search_year',1, 20, 5);
 	print '</td>';
 	print '<td class="liste_titre"><input type="text" class="flat maxwidth50" name="search_ref" value="' . dol_escape_htmltag($search_ref) . '"></td>';