diff --git a/addons/web/static/src/js/search.js b/addons/web/static/src/js/search.js
index 4faf9dabdd5..087c4c22294 100644
--- a/addons/web/static/src/js/search.js
+++ b/addons/web/static/src/js/search.js
@@ -1234,7 +1234,7 @@ instance.web.search.Field = instance.web.search.Input.extend( /** @lends instanc
         var self = this;
         // A field needs a context to send when active
         var context = this.attrs.context;
-        if (!context || !facet.values.length) {
+        if (_.isEmpty(context) || !facet.values.length) {
             return;
         }
         var contexts = facet.values.map(function (facetValue) {
@@ -1533,7 +1533,7 @@ instance.web.search.ManyToOneField = instance.web.search.CharField.extend({
     },
     get_context: function (facet) {
         var values = facet.values;
-        if (!this.attrs.context && values.length === 1) {
+        if (_.isEmpty(this.attrs.context) && values.length === 1) {
             var c = {};
             c['default_' + this.attrs.name] = values.at(0).get('value');
             return c;