diff --git a/frontend-js/src/main/js/GuiConnector.js b/frontend-js/src/main/js/GuiConnector.js
index 1d1aa5ad8a8fcfcd0c7b5ec7c751004e4abdb74a..b2843370fb61699f07d027acc458f04132e5efd5 100644
--- a/frontend-js/src/main/js/GuiConnector.js
+++ b/frontend-js/src/main/js/GuiConnector.js
@@ -296,7 +296,23 @@ GuiConnector.prototype.alert = function (error, redirectIfSecurityError) {
 
     var errorData = self.getErrorMessageForError(error);
     if (!errorData.showReport) {
-
+      // legacy dialog (no report)
+      self._errorDialog = document.createElement("div");
+      self._errorDialogContent = document.createElement("div");
+      self._errorDialog.appendChild(self._errorDialogContent);
+      document.body.appendChild(self._errorDialog);
+      $(self._errorDialog).dialog({
+        classes: {
+          "ui-dialog": "ui-state-error"
+        },
+        modal: true,
+        title: "ERROR",
+        close: function() {
+          $(this).dialog('destroy').remove();
+        }
+      }).siblings('.ui-dialog-titlebar').css("background", "red");
+      self._errorDialogContent.innerHTML = errorData.message;
+      $(self._errorDialog).dialog("open");
     } else {
       self._errorDialog = document.createElement('div');
       self._errorDialog.innerHTML = '<span class="ui-icon ui-icon-info" style="float: right;" title="The error message. This might not be human readable. If this issue persists you should should contact your administrator."></span>' +
@@ -338,6 +354,9 @@ GuiConnector.prototype.alert = function (error, redirectIfSecurityError) {
         height: 'auto',
         width: '500px',
         modal: true,
+        close: function() {
+          $(this).dialog('destroy').remove();
+        },
         buttons: {
           'Submit': function () {
             var report = {
@@ -351,10 +370,10 @@ GuiConnector.prototype.alert = function (error, redirectIfSecurityError) {
               }
             });
             ServerConnector.submitErrorToMinervaNet(report);
-            $(this).dialog('destroy').remove();
+            $(this).dialog('close');
           },
           'Cancel': function () {
-            $(this).dialog('destroy').remove();
+            $(this).dialog('close');
           }
         }
       }).dialog("open");