diff --git a/frontend_tests/node_tests/compose.js b/frontend_tests/node_tests/compose.js
index 60d9a00d94..1d611b707e 100644
--- a/frontend_tests/node_tests/compose.js
+++ b/frontend_tests/node_tests/compose.js
@@ -197,6 +197,11 @@ run_test('validate', () => {
     assert.equal($("#compose-send-button").prop('disabled'), false);
     assert.equal($('#compose-error-msg').html(), i18n.t('You have nothing to send!'));
 
+    reminder.is_deferred_delivery = () => true;
+    compose.validate();
+    assert.equal($('#sending-indicator').html(), 'translated: Scheduling...');
+    reminder.is_deferred_delivery = noop;
+
     add_content_to_compose_box();
     var zephyr_checked = false;
     $("#zephyr-mirror-error").is = function () {