diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index c7416e240..455feb4a7 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -1350,7 +1350,6 @@ matrix_cactus_comments_systemd_required_services_list: |
     +
     (['matrix-' + matrix_homeserver_implementation + '.service'])
   }}
-matrix_cactus_comments_homeserver_url: "{{ matrix_homeserver_container_url }}"
 
 ######################################################################
 #
diff --git a/roles/matrix-cactus-comments/defaults/main.yml b/roles/matrix-cactus-comments/defaults/main.yml
index 1fbe96893..920fd76de 100644
--- a/roles/matrix-cactus-comments/defaults/main.yml
+++ b/roles/matrix-cactus-comments/defaults/main.yml
@@ -19,7 +19,7 @@ matrix_cactus_comments_app_service_env_file: "{{ matrix_cactus_comments_base_pat
 
 matrix_cactus_comments_as_token: ''
 matrix_cactus_comments_hs_token: ''
-matrix_cactus_comments_homeserver_url: ''
+matrix_cactus_comments_homeserver_url: "{{ matrix_homeserver_container_url }}"
 matrix_cactus_comments_user_id: "bot.cactusbot"
 matrix_cactus_comments_tmp_directory_size_mb: 1