diff --git a/js/search/search_form_criteria_date_abstract.js b/js/search/search_form_criteria_date_abstract.js
index 9a4b9e04f4..76f14ce4b9 100644
--- a/js/search/search_form_criteria_date_abstract.js
+++ b/js/search/search_form_criteria_date_abstract.js
@@ -24,6 +24,7 @@ $(function()
 				'not_empty': {
 					'rank': 800,//pre-existing, reordered
 				},
+				'=': null
 			},
 			aInputsParam: [
 				{