diff --git a/image/service/slapd/process.sh b/image/service/slapd/process.sh
index e1a17bd..8303270 100755
--- a/image/service/slapd/process.sh
+++ b/image/service/slapd/process.sh
@@ -12,5 +12,5 @@
 # Call hostname to determine the fully qualified domain name. We want OpenLDAP to listen
 # to the named host for the ldap:// and ldaps:// protocols.
 FQDN="$(/bin/hostname --fqdn)"
-HOST_PARAM="ldap://$FQDN:$LDAP_PORT ldaps://$FQDN:$LDAP_PORT"
+HOST_PARAM="ldap://$FQDN:$LDAP_PORT ldaps://$FQDN:$LDAPS_PORT"
 exec /usr/sbin/slapd -h "$HOST_PARAM ldapi:///" -u openldap -g openldap -d "$LDAP_LOG_LEVEL"