diff --git a/mindplot/src/main/javascript/Designer.js b/mindplot/src/main/javascript/Designer.js
index ba7754b1..49b59c5c 100644
--- a/mindplot/src/main/javascript/Designer.js
+++ b/mindplot/src/main/javascript/Designer.js
@@ -80,13 +80,12 @@ mindplot.Designer = new Class({
 
         _registerWheelEvents:function () {
             var workspace = this._workspace;
-            var screenManager = workspace.getScreenManager();
-
+            var me = this;
             // Zoom In and Zoom Out must active event
-            $(document).bind('mousewheel', function (event) {
+            $(document).on('mousewheel', function (event) {
                 // Change mousewheel handling so we let the default
-                //event happen if we are outside the container.
-                var coords = screenManager.getContainer()[0].getCoordinates();
+                // event happen if we are outside the container. -> FIXME: it still happening?
+                /*var coords = screenManager.getContainer().getCoordinates();
                 var isOutsideContainer = event.client.y < coords.top ||
                     event.client.y > coords.bottom ||
                     event.client.x < coords.left ||
@@ -100,8 +99,15 @@ mindplot.Designer = new Class({
                         this.zoomOut(1.05);
                     }
                     event.preventDefault();
+                }*/
+                if (event.deltaY > 0) {
+                    me.zoomIn(1.05);
                 }
-            }.bind(this));
+                else {
+                    me.zoomOut(1.05);
+                }
+                event.preventDefault();
+            });
         },
 
         /**