diff --git a/promenade/templates/roles/common/etc/promenade/haproxy/haproxy.cfg b/promenade/templates/roles/common/etc/promenade/haproxy/haproxy.cfg
index 715bc9fc..c2ab2cce 100644
--- a/promenade/templates/roles/common/etc/promenade/haproxy/haproxy.cfg
+++ b/promenade/templates/roles/common/etc/promenade/haproxy/haproxy.cfg
@@ -42,3 +42,5 @@ backend kube-system-kubernetes-etcd-be
   {%- for ip in config.join_ips %}
   server s{{ ip }} {{ ip }}:{{ port }} check port {{ port }}
   {%- endfor %}
+
+# Haproxy requires config files end with a newline.