diff --git a/include/classes/worker.class.php b/include/classes/worker.class.php
index cb13387f..d87b0480 100644
--- a/include/classes/worker.class.php
+++ b/include/classes/worker.class.php
@@ -124,7 +124,7 @@ class Worker extends Base {
          ) AS shares
        FROM $this->table AS w
        WHERE id = ?");
-    if ($this->checkStmt($stmt) && $stmt->bind_param('iiiii', $interval, $interval, $interval, $interval, $id) && $stmt->execute() && $result = $stmt->get_result()) {
+    if ($this->checkStmt($stmt) && $stmt->bind_param('iiiii', $interval, $interval, $interval, $interval, $id) && $stmt->execute() && ($result = $stmt->get_result())) {
       $row = $result->fetch_assoc();
       $row['hashrate'] = round($this->coin->calcHashrate($row['shares'], $interval), 2);
       if ($row['count_all'] > 0) {