diff --git a/README.md b/README.md
index 14ed434..fdd514f 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ window.onload = function() {
     });
 
     // (example) update the size and positioning on window resize
-    window.onresize = function(event) { contain.update(); };
+    window.onresize = function() { contain.update(); };
 
     // (example) update the size and positioning on orientation change
     screen.addEventListener('orientationchange', function() { contain.update(); });