1 files changed, 3 insertions, 0 deletions
diff --git a/addons/web/static/src/js/views/form_relational_widgets.js b/addons/web/static/src/js/views/form_relational_widgets.js
index a1444bcae85..5b0987f0fc0 100644
--- a/addons/web/static/src/js/views/form_relational_widgets.js
+++ b/addons/web/static/src/js/views/form_relational_widgets.js
@@ -886,6 +886,9 @@ var FieldX2Many = AbstractManyField.extend({
         }
         return true;
     },
+    is_false: function () {
+        return _(this.dataset.ids).isEmpty();
+    },
 });
 
 var X2ManyDataSet = data.BufferedDataSet.extend({