diff --git a/README.md b/README.md
index 76288a4e9701b1245d5cf9816765298b3695d14f..e73239084a1823e3285c2eb5aa4fb8a939c7da42 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ const thread = new Thread('path/to/thread.js');
 thread.postMessage('hello');
 
 // listen for messages
-thread.onMessage = (message) => console.log(message);
+thread.onmessage = (message) => console.log(message);
 
 // stop the JS process
 thread.terminate();