diff --git a/libervia/backend/plugins/plugin_app_manager_docker/libervia_app_peertube.yaml b/libervia/backend/plugins/plugin_app_manager_docker/libervia_app_peertube.yaml
index 18808bf8..24d2527e 100644
--- a/libervia/backend/plugins/plugin_app_manager_docker/libervia_app_peertube.yaml
+++ b/libervia/backend/plugins/plugin_app_manager_docker/libervia_app_peertube.yaml
@@ -60,7 +60,7 @@ override:
         PEERTUBE_SMTP_DISABLE_STARTTLS: !libervia_conf ["", "email_starttls", "false", "not"]
         PEERTUBE_SMTP_PORT: !libervia_conf ["", "email_port"]
         PEERTUBE_SMTP_FROM: !libervia_conf ["application peertube", "email_from", "peertube@example.com"]
-        PEERTUBE_SMTP_TLS: false
+        PEERTUBE_SMTP_TLS: "false"
         PEERTUBE_ADMIN_EMAIL: !libervia_conf ["", "email_admins_list", "", "first"]
         PEERTUBE_OBJECT_STORAGE_UPLOAD_ACL_PUBLIC: "public-read"
         PEERTUBE_OBJECT_STORAGE_UPLOAD_ACL_PRIVATE: "private"