diff --git a/lib/ace/lib/event.js b/lib/ace/lib/event.js
index 1da47ac4..ca210203 100644
--- a/lib/ace/lib/event.js
+++ b/lib/ace/lib/event.js
@@ -143,7 +143,7 @@ else {
 exports.addMouseWheelListener = function(el, callback) {
     if ("onmousewheel" in el) {
         var factor = 8;
-        exports.addListener(el, "DOMMouseScroll", function(e) {
+        exports.addListener(el, "mousewheel", function(e) {
             if (e.wheelDeltaX !== undefined) {
                 e.wheelX = -e.wheelDeltaX / factor;
                 e.wheelY = -e.wheelDeltaY / factor;