diff --git a/cli/dts/lib.deno.ns.d.ts b/cli/dts/lib.deno.ns.d.ts
index eaf48dade9..b648423fd2 100644
--- a/cli/dts/lib.deno.ns.d.ts
+++ b/cli/dts/lib.deno.ns.d.ts
@@ -2363,7 +2363,7 @@ declare namespace Deno {
    *
    * ```ts
    * // truncate the entire file
-   * const file = Deno.open("my_file.txt", { read: true, write: true, truncate: true, create: true });
+   * const file = Deno.openSync("my_file.txt", { read: true, write: true, truncate: true, create: true });
    * Deno.ftruncateSync(file.rid);
    *
    * // truncate part of the file