diff --git a/leaflet.shpfile.js b/leaflet.shpfile.js
index 2b4a213..a528b1b 100644
--- a/leaflet.shpfile.js
+++ b/leaflet.shpfile.js
@@ -51,7 +51,7 @@ L.Shapefile = L.GeoJSON.extend({
       self.addData(data);
       self.fire('data:loaded');
       self.worker.close();
-    }).catch(function(err) {
+    }).then(function() {}, function(err) {
       self.fire('data:error', err);
     })
     return this;