diff --git a/ansible/roles/schulcloud-calendar-core/templates/configmap.yml.j2 b/ansible/roles/schulcloud-calendar-core/templates/configmap.yml.j2
index 1033ba9..e35e4a6 100644
--- a/ansible/roles/schulcloud-calendar-core/templates/configmap.yml.j2
+++ b/ansible/roles/schulcloud-calendar-core/templates/configmap.yml.j2
@@ -17,6 +17,6 @@ data:
   IS_MIGRATION: "{{ CAL_IS_MIGRATION }}"
 {% endif %}
 {% if WITH_BRANCH_POSTGRES_DB_MANAGEMENT is defined and WITH_BRANCH_POSTGRES_DB_MANAGEMENT|bool %}
-  DB_HOST: {{ POSTGRES_HOST }}
-  DB_SSL: true
+  DB_HOST: "{{ POSTGRES_HOST }}"
+  DB_SSL: "true"
 {% endif %}
\ No newline at end of file