diff --git a/packages/mocha/index.js b/packages/mocha/index.js
index 338caac..2906834 100644
--- a/packages/mocha/index.js
+++ b/packages/mocha/index.js
@@ -145,6 +145,10 @@ class Runner extends EventEmitter {
     this.emit(EVENT_RUN_BEGIN);
   }
 
+  get suite() {
+    return this.#current;
+  }
+
   end() {
     if (!this.#reporter) {
       return;
diff --git a/packages/mocha/tests/customReporter/reporter.js b/packages/mocha/tests/customReporter/reporter.js
index b9eef69..9a10c33 100644
--- a/packages/mocha/tests/customReporter/reporter.js
+++ b/packages/mocha/tests/customReporter/reporter.js
@@ -2,8 +2,11 @@
 
 'use strict';
 
+const assert = require('assert');
+
 class Reporter {
   constructor(runner) {
+    assert(runner.suite, 'missing root suite');
     runner.on('test end', (test) => {
       console.log({
         state: test.state,