diff --git a/mail/js/app.js b/mail/js/app.js
index 48faa62fda..2104033b4e 100644
--- a/mail/js/app.js
+++ b/mail/js/app.js
@@ -1034,7 +1034,8 @@ app.classes.mail = AppJS.extend(
 		ftree = this.et2.getWidgetById(this.nm_index+'[foldertree]');
 		var _foldernode = ftree.getSelectedNode();
 		var counter = _foldernode.label.match(this._unseen_regexp);
-		var icounter = parseInt(counter[0].replace(' (','').replace(')',''));
+		var icounter = 0;
+		if ( counter ) icounter = parseInt(counter[0].replace(' (','').replace(')',''));
 		if (icounter>0)
 		{
 			var newcounter = icounter-1;