diff --git a/www/datastore/Summary.js b/www/datastore/Summary.js
index 628f0c60..1616bd57 100644
--- a/www/datastore/Summary.js
+++ b/www/datastore/Summary.js
@@ -264,6 +264,9 @@ Ext.define('PBS.DataStoreSummary', {
 	    if (key !== 'summarycolumns') {
 		return;
 	    }
+	    if (!me.rendered) {
+		return;
+	    }
 	    Proxmox.Utils.updateColumns(me);
 	});