diff --git a/persistence.js b/persistence.js
index 1b7ecea..fe220b6 100644
--- a/persistence.js
+++ b/persistence.js
@@ -65,7 +65,7 @@ MongoPersistence.prototype._setup = function () {
 
   this._connect(function (err, client) {
     if (err) {
-      this.emit('error', err)
+      that.emit('error', err)
       return
     }