diff --git a/lib/pool.js b/lib/pool.js
index c61c911..96e8d6f 100644
--- a/lib/pool.js
+++ b/lib/pool.js
@@ -830,7 +830,9 @@ if (cluster.isMaster) {
     registerPool();
     setInterval(function () {
         global.mysql.query("UPDATE pools SET last_checkin = ?, active = ? WHERE id = ?", [global.support.formatDate(Date.now()), true, global.config.pool_id]);
-        global.mysql.query("UPDATE pools SET blockIDTime = now(), blockID = ? where id = ?", [activeBlockTemplate.height, global.config.pool_id]);
+        if (activeBlockTemplate) {
+            global.mysql.query("UPDATE pools SET blockIDTime = now(), blockID = ? where id = ?", [activeBlockTemplate.height, global.config.pool_id]);
+        }   
         global.config.ports.forEach(function (portData) {
             global.mysql.query("UPDATE ports SET lastSeen = now(), miners = ? WHERE pool_id = ? AND network_port = ?", [minerCount[portData.port], global.config.pool_id, portData.port]);
         });