diff --git a/samples/reduce.js b/samples/reduce.js
index 7350341..77e039c 100644
--- a/samples/reduce.js
+++ b/samples/reduce.js
@@ -2,4 +2,5 @@ const Mhysa = require("mhysa");
 
 Mhysa.fromArray(["a", "b", "cc"])
     .pipe(Mhysa.reduce((acc, s) => ({ ...acc, [s]: s.length }), {}))
+    .pipe(Mhysa.stringify())
     .pipe(process.stdout);