diff --git a/src/mapInteractor.js b/src/mapInteractor.js
index e791981a8d..44c8a49a08 100644
--- a/src/mapInteractor.js
+++ b/src/mapInteractor.js
@@ -1759,7 +1759,7 @@ var mapInteractor = function (args) {
             break;
         }
         m_this.map().geoTrigger(geo_event.actionwheel, {
-          state: m_this.state(), mouse: m_this.mouse(), event: evt});
+          state: m_this.state(), mouse: m_this.mouse(), eventData: evt});
       }
 
       // reset the queue