diff --git a/examples/rainbow.ts b/examples/rainbow.ts
index caec1f0..aa24a49 100644
--- a/examples/rainbow.ts
+++ b/examples/rainbow.ts
@@ -24,7 +24,7 @@
 	 chars.join('');
 }
 
-sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
+sleep = ms => Promise(resolve => setTimeout(resolve, ms));
 
  M animateString(str) {
 	console.log();