diff --git a/x-pack/test/functional_with_es_ssl/apps/triggers_actions_ui/alerts.ts b/x-pack/test/functional_with_es_ssl/apps/triggers_actions_ui/alerts.ts
index 75ae6b9ea7c2..791712fa2448 100644
--- a/x-pack/test/functional_with_es_ssl/apps/triggers_actions_ui/alerts.ts
+++ b/x-pack/test/functional_with_es_ssl/apps/triggers_actions_ui/alerts.ts
@@ -80,10 +80,9 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
       await loggingMessageInput.click();
       await loggingMessageInput.clearValue();
       await loggingMessageInput.type('test message');
-      // TODO: uncomment variables test when server API will be ready
-      // await testSubjects.click('slackAddVariableButton');
-      // const variableMenuButton = await testSubjects.find('variableMenuButton-0');
-      // await variableMenuButton.click();
+      await testSubjects.click('slackAddVariableButton');
+      const variableMenuButton = await testSubjects.find('variableMenuButton-0');
+      await variableMenuButton.click();
       await find.clickByCssSelector('[data-test-subj="saveAlertButton"]');
       const toastTitle = await pageObjects.common.closeToast();
       expect(toastTitle).to.eql(`Saved '${alertName}'`);