diff --git a/roles/containers/defaults/main.yml b/roles/containers/defaults/main.yml
index 4c564ca..80bcec6 100644
--- a/roles/containers/defaults/main.yml
+++ b/roles/containers/defaults/main.yml
@@ -21,9 +21,9 @@ wanda_postgres_db: wandadb
 rabbitmq_username: trento
 rabbitmq_host: host.docker.internal
 rabbitmq_vhost: "trento"
-secret_key_base: "lookup('community.general.random_string', base64=True, length=64)"
-access_token_secret: "lookup('community.general.random_string', base64=True, length=64)"
-refresh_token_secret: "lookup('community.general.random_string', base64=True, length=64)"
+secret_key_base: "{{ lookup('community.general.random_string', base64=True, length=64) }}"
+access_token_secret: "{{ lookup('community.general.random_string', base64=True, length=64) }}"
+refresh_token_secret: "{{ lookup('community.general.random_string', base64=True, length=64) }}"
 web_admin_username: admin
 enable_alerting: "false"
 enable_api_key: "true"