diff --git a/src/util/evented.js b/src/util/evented.js
index c29bffef346..322eb3e40df 100644
--- a/src/util/evented.js
+++ b/src/util/evented.js
@@ -149,14 +149,14 @@ export class Evented {
     }
 
     /**
-     * Returns a true if this instance of Evented or any forwardeed instances of Evented have a listener for the specified type.
+     * Returns true if this instance of Evented or any forwarded instances of Evented have a listener for the specified type.
      *
      * @param {string} type The event type
      * @returns {boolean} `true` if there is at least one registered listener for specified event type, `false` otherwise
      * @private
      */
     listens(type: string) {
-        return (
+        return !!(
             (this._listeners && this._listeners[type] && this._listeners[type].length > 0) ||
             (this._oneTimeListeners && this._oneTimeListeners[type] && this._oneTimeListeners[type].length > 0) ||
             (this._eventedParent && this._eventedParent.listens(type))
diff --git a/test/unit/util/evented.test.js b/test/unit/util/evented.test.js
index ff6c6e97adb..62fbe2cc87f 100644
--- a/test/unit/util/evented.test.js
+++ b/test/unit/util/evented.test.js
@@ -93,7 +93,7 @@ test('Evented', (t) => {
         const evented = new Evented();
         evented.on('a', () => {});
         t.ok(evented.listens('a'));
-        t.notOk(evented.listens('b'));
+        t.equals(evented.listens('b'), false);
         t.end();
     });