diff --git a/lib/VideoEncoder.js b/lib/VideoEncoder.js
index 44cc372..4477d79 100644
--- a/lib/VideoEncoder.js
+++ b/lib/VideoEncoder.js
@@ -127,8 +127,8 @@ class VideoEncoder extends Emitter
 	}
 
 	/**
-	 * @param {string} trackId (unused. FIXME: please remove)
-	 * @param {Native.FrameDispatchCoordinatorShared} frameDispatchCoordinator
+	 * @param {string} [trackId] (unused. FIXME: please remove)
+	 * @param {Native.FrameDispatchCoordinatorShared} [frameDispatchCoordinator]
 	 * @returns 
 	 */
 	createIncomingStreamTrack(trackId, frameDispatchCoordinator)