diff --git a/modules/offline/js/offline.js b/modules/offline/js/offline.js
index 89a568a..0b180aa 100644
--- a/modules/offline/js/offline.js
+++ b/modules/offline/js/offline.js
@@ -28,7 +28,7 @@ o2.Offline = {
 			o2.Offline.onWindowUnloading();
 		} );
 
-		jQuery( window ).unload( function() {
+		jQuery( window ).on( 'unload', function() {
 			o2.Offline.onWindowUnloading();
 		} );
 	},