diff --git a/js/misc/dbusErrors.js b/js/misc/dbusErrors.js
index f59add314..6cb8a83b1 100644
--- a/js/misc/dbusErrors.js
+++ b/js/misc/dbusErrors.js
@@ -34,3 +34,10 @@ const modalDialogErrorNames = [
 export const ModalDialogErrors =
     registerErrorDomain('ModalDialog', modalDialogErrorNames);
 export const ModalDialogError = createErrorEnum(modalDialogErrorNames);
+
+const notificationErrorNames = [
+    'InvalidApp',
+];
+export const NotificationErrors =
+    registerErrorDomain('Notifications', notificationErrorNames, 'org.gtk');
+export const NotificationError = createErrorEnum(notificationErrorNames);
diff --git a/js/ui/notificationDaemon.js b/js/ui/notificationDaemon.js
index cec670dd0..899a97516 100644
--- a/js/ui/notificationDaemon.js
+++ b/js/ui/notificationDaemon.js
@@ -12,6 +12,7 @@ import * as MessageTray from './messageTray.js';
 import * as Params from '../misc/params.js';
 
 import {loadInterfaceXML} from '../misc/fileUtils.js';
+import {NotificationErrors, NotificationError} from '../misc/dbusErrors.js';
 
 const FdoNotificationsIface = loadInterfaceXML('org.freedesktop.Notifications');
 
@@ -694,7 +695,8 @@ class GtkNotificationDaemon {
             source = this._ensureAppSource(appId);
         } catch (e) {
             if (e instanceof InvalidAppError) {
-                invocation.return_dbus_error('org.gtk.Notifications.InvalidApp',
+                invocation.return_error_literal(NotificationErrors,
+                    NotificationError.INVALID_APP,
                     `The app by ID "${appId}" could not be found`);
                 return;
             }