diff --git a/htdocs/modulebuilder/template/myobject_list.php b/htdocs/modulebuilder/template/myobject_list.php
index d9af4add8ce..87ecc59d33c 100644
--- a/htdocs/modulebuilder/template/myobject_list.php
+++ b/htdocs/modulebuilder/template/myobject_list.php
@@ -145,8 +145,16 @@ foreach ($object->fields as $key => $val) {
 		$search[$key] = GETPOST('search_'.$key, 'alpha');
 	}
 	if (preg_match('/^(date|timestamp|datetime)/', $val['type'])) {
-		$search[$key.'_dtstart'] = dol_mktime(0, 0, 0, GETPOST('search_'.$key.'_dtstartmonth', 'int'), GETPOST('search_'.$key.'_dtstartday', 'int'), GETPOST('search_'.$key.'_dtstartyear', 'int'));
-		$search[$key.'_dtend'] = dol_mktime(23, 59, 59, GETPOST('search_'.$key.'_dtendmonth', 'int'), GETPOST('search_'.$key.'_dtendday', 'int'), GETPOST('search_'.$key.'_dtendyear', 'int'));
+		if (empty(GETPOST('search_'.$key.'_dtstart', 'int'))) {
+			$search[$key.'_dtstart'] = dol_mktime(0, 0, 0, GETPOST('search_'.$key.'_dtstartmonth', 'int'), GETPOST('search_'.$key.'_dtstartday', 'int'), GETPOST('search_'.$key.'_dtstartyear', 'int'));
+		} else {
+			$search[$key.'_dtstart'] = GETPOST('search_'.$key.'_dtstart', 'int');
+		}
+		if (empty(GETPOST('search_'.$key.'_dtend', 'int'))) {
+			$search[$key.'_dtend'] = dol_mktime(23, 59, 59, GETPOST('search_'.$key.'_dtendmonth', 'int'), GETPOST('search_'.$key.'_dtendday', 'int'), GETPOST('search_'.$key.'_dtendyear', 'int'));
+		} else {
+			$search[$key.'_dtend'] = GETPOST('search_'.$key.'_dtend', 'int');
+		}
 	}
 }