diff --git a/cli/dts/lib.deno.ns.d.ts b/cli/dts/lib.deno.ns.d.ts
index 5a7eedfd1d..f6b0c0de81 100644
--- a/cli/dts/lib.deno.ns.d.ts
+++ b/cli/dts/lib.deno.ns.d.ts
@@ -1970,7 +1970,13 @@ declare namespace Deno {
    *
    * ```ts
    * const watcher = Deno.watchFs("/");
-   * setTimeout(() => { watcher.return(); }, 5000);
+   *
+   * setTimeout(() => {
+   *   if (watcher.return) {
+   *     watcher.return();
+   *   }
+   * }, 5000);
+   *
    * for await (const event of watcher) {
    *    console.log(">>>> event", event);
    * }