diff --git a/gns3server/cert_utils/create_cert.sh b/gns3server/cert_utils/create_cert.sh
index 5b2c8e28..92f6edfb 100755
--- a/gns3server/cert_utils/create_cert.sh
+++ b/gns3server/cert_utils/create_cert.sh
@@ -62,7 +62,7 @@ C=CA
 ST=Alberta
 O=GNS3
 localityName=Calgary
-commonName=gns3server.localdomain.com
+commonName=$DOMAIN
 organizationalUnitName=GNS3Server
 emailAddress=gns3cert@gns3.com
 "