diff --git a/packages/mocha/test/acceptance/index-test.js b/packages/mocha/test/acceptance/index-test.js
index d24678dbe..6d4fadabe 100644
--- a/packages/mocha/test/acceptance/index-test.js
+++ b/packages/mocha/test/acceptance/index-test.js
@@ -314,8 +314,7 @@ describe(function() {
         this.assertFilesExist('after without mocha-helpers !after all! hook for !failure');
       });
 
-      // eslint-disable-next-line mocha/no-skipped-tests
-      it.skip('works in firefox', async function() {
+      it('works in firefox', async function() {
         let stats = await this.runTests({
           filter: 'it firefox ',
         });