diff --git a/lib/connect-mysql-session.js b/lib/connect-mysql-session.js
index bf33c96..a62e7b8 100644
--- a/lib/connect-mysql-session.js
+++ b/lib/connect-mysql-session.js
@@ -168,7 +168,9 @@ module.exports = function (connect)
         
         this.clear = function (callback)
         {
-            sequelize.sync({force: true}, callback);
+            sequelize.sync({force: true})
+                .on('success', callback)
+                .on('failure', function () { callback(null); });
         };
     }