diff --git a/docker/personal/gramps/docker-compose.yml b/docker/personal/gramps/docker-compose.yml
index 56b078a..4401d66 100644
--- a/docker/personal/gramps/docker-compose.yml
+++ b/docker/personal/gramps/docker-compose.yml
@@ -9,6 +9,7 @@ services:
     ports:
       - "5000"
     environment:
+      GDK_BACKEND: "-"
       GRAMPSWEB_TREE: "Gramps Web"  # will create a new tree if not exists
       GRAMPSWEB_CELERY_CONFIG__broker_url: "redis://grampsweb_redis:6379/0"
       GRAMPSWEB_CELERY_CONFIG__result_backend: "redis://grampsweb_redis:6379/0"