diff --git a/roles/docker-container/templates/healthcheck/curl.yml.j2 b/roles/docker-container/templates/healthcheck/curl.yml.j2
index f98fa040..861d5f36 100644
--- a/roles/docker-container/templates/healthcheck/curl.yml.j2
+++ b/roles/docker-container/templates/healthcheck/curl.yml.j2
@@ -3,7 +3,7 @@
         - "CMD"
         - "curl"
         - "-f"
-{% if container_hostname %}
+{% if container_hostname is defined %}
         - "-H"
         - "Host: {{ container_hostname }}"
 {% endif %}