diff --git a/addons/web/static/tests/views/calendar_tests.js b/addons/web/static/tests/views/calendar_tests.js
index 344bc4934f3..9f99431ae43 100644
--- a/addons/web/static/tests/views/calendar_tests.js
+++ b/addons/web/static/tests/views/calendar_tests.js
@@ -677,6 +677,7 @@ QUnit.module('Views', {
         assert.containsOnce($('body'), '.modal', "there should be only one open modal");
 
         calendar.destroy();
+        testUtils.mock.unpatch(ViewDialogs.FormViewDialog);
     });
 
     QUnit.test('create event with timezone in week mode European locale', async function (assert) {