diff --git a/defaults/main.yml b/defaults/main.yml
index d55d115..5b82baf 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,6 +1,5 @@
 ---
 collabora_domain: collabora.example.url
-collabora_cert_domain: example.url
 collabora_image: tiredofit/collabora-online
 collabora_version: 2.4.19
 collabora_container_hostname: collabora