diff --git a/javascript/src/FileDelete.js b/javascript/src/FileDelete.js
index 9cfce9aba431cff09082c6416340b4d3c2a38ede..40324659593e1a7cd41618aaebe2fd3551470d3c 100644
--- a/javascript/src/FileDelete.js
+++ b/javascript/src/FileDelete.js
@@ -26,6 +26,7 @@ var QfqNS = QfqNS || {};
     };
 
     n.FileDelete.prototype.buttonClicked = function (event) {
+        event.preventDefault();
         var alert = new n.Alert("Do you want to delete the file?", "warning", "okcancel");
         alert.on('alert.ok', function () {
             this.performFileDelete(event);