diff --git a/openldap-server/files/openldap-letsencrypt-acme.sh b/openldap-server/files/openldap-letsencrypt-acme.sh
index 3f1f07c8..ce0d1066 100644
--- a/openldap-server/files/openldap-letsencrypt-acme.sh
+++ b/openldap-server/files/openldap-letsencrypt-acme.sh
@@ -27,7 +27,11 @@ chown openldap $OPENLDAP_CERTDIR/privkey.pem
 chmod 400 $OPENLDAP_CERTDIR/privkey.pem
 
 echo "Restart the openldap service" >> $LE_LOG_DIR/openldap.log
-service slapd restart >/dev/null 2>&1
+if [ -x /bin/systemctl ] ; then
+    systemctl force-reload slapd >/dev/null 2>&1
+else
+    service slapd force-reload >/dev/null 2>&1
+fi
 echo "Done." >> $LE_LOG_DIR/openldap.log
 
 exit 0