diff --git a/public/js/signature.js b/public/js/signature.js
index 81d0067..71d4135 100644
--- a/public/js/signature.js
+++ b/public/js/signature.js
@@ -903,11 +903,6 @@ var createEventsListener = function() {
         zoomChange(1)
     });
 
-    window.addEventListener('beforeunload', function(event) {
-        event.preventDefault();
-        return true;
-    });
-
     if(hash) {
         updateNbLayers();
         setInterval(function() {