diff --git a/main.py b/main.py
index 4831515..08fb84b 100755
--- a/main.py
+++ b/main.py
@@ -29,7 +29,7 @@ template_txt = "{field1} IN TXT {field2}"
 template_srv = "_{service}._{protocol}.{zone} {ttl} IN SRV {priority} {weight} {port} {target}"
 template_a = "{hostname} IN A {ipv4}"
 template_aaaa = "{hostname} IN AAAA {ipv6}"
-template_cname = "{hostname} IN CNAME {alias}"
+template_cname = "{hostname} IN CNAME {alias}."
 template_ptr = "{target} IN PTR {hostname}."
 
 template_zone = ("$TTL 2D\n"
@@ -138,7 +138,7 @@ def write_dns_files(api_client):
         
         cname_records = "\n".join(
             template_cname.format(hostname=x['hostname'],
-                                  alias=x['alias'],extension=x['extension'])
+                                  alias=x['alias'])
             for x in zone['cname_records']
         )