diff --git a/store.js b/store.js
index 6f3bc23e..a45c8014 100644
--- a/store.js
+++ b/store.js
@@ -274,6 +274,7 @@ SnapSerializer.prototype.watcherLabels = {
 // SnapSerializer instance creation:
 
 function SnapSerializer() {
+    XML_Serializer.call(this);
     this.init();
 }