diff --git a/data/org.freedesktop.impl.portal.Notification.xml b/data/org.freedesktop.impl.portal.Notification.xml
index cea66de55..abd153b9a 100644
--- a/data/org.freedesktop.impl.portal.Notification.xml
+++ b/data/org.freedesktop.impl.portal.Notification.xml
@@ -47,6 +47,13 @@
 
         The format of the @notification is the same as for
         :ref:`org.freedesktop.portal.Notification.AddNotification`.
+        It additionally can contain the following keys:
+
+        * ``desktop-file-id`` (``s``)
+
+          The desktop file ID of the app adding the notification. A desktop
+          file ID is the basename of the desktop file, including the
+          .desktop extension.
 
         Since version 2, the icon property never uses the ``bytes`` option.
     -->
diff --git a/src/notification.c b/src/notification.c
index 38494dad8..fa9b20c1c 100644
--- a/src/notification.c
+++ b/src/notification.c
@@ -1046,6 +1046,7 @@ handle_add_in_thread_func (GTask        *task,
 {
   CallData *call_data = task_data;
   GVariantBuilder builder;
+  const char *desktop_file_id;
   g_autoptr(GError) error = NULL;
 
   CALL_DATA_AUTOLOCK (call_data);
@@ -1077,6 +1078,10 @@ handle_add_in_thread_func (GTask        *task,
       return;
     }
 
+  desktop_file_id = xdp_app_info_get_desktop_file_id (call_data->app_info);
+  if (desktop_file_id)
+    g_variant_builder_add (&builder, "{ss}", "desktop-file-id", desktop_file_id);
+
   xdp_dbus_impl_notification_call_add_notification (impl,
                                                     xdp_app_info_get_id (call_data->app_info),
                                                     call_data->id,