diff --git a/defaults/main.yml b/defaults/main.yml
index 7ad72c9..63f4cfb 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,6 +1,7 @@
 ---
 # domain, webroot
 nextcloud_domain: example.com
+nextcloud_trusted_domains: ["{{ nextcloud_domain }}"]
 nextcloud_web_root: /
 
 # database
diff --git a/tasks/main.yml b/tasks/main.yml
index 4b10274..eeb6721 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -50,6 +50,8 @@
     volumes:
       - "{{ nextcloud_volume }}:/var/www/html"
     env:
+      NEXTCLOUD_TRUSTED_DOMAINS:
+        "{{ nextcloud_trusted_domains | join(' ') }}"
       SQLITE_DATABASE:
         "{{ nextcloud_db_name if nextcloud_db_engine == 'sqlite' else '' }}"
       MYSQL_DATABASE: