diff --git a/MysqliDb.php b/MysqliDb.php
index e264f7a9..02cf2ec9 100644
--- a/MysqliDb.php
+++ b/MysqliDb.php
@@ -1835,7 +1835,7 @@ protected function _buildInsertQuery($tableData)
         $dataColumns = array_keys($tableData);
         if ($isInsert) {
             if (isset ($dataColumns[0]))
-                $this->_query .= ' (`' . implode($dataColumns, '`, `') . '`) ';
+                $this->_query .= ' (`' . implode('`, `', $dataColumns) . '`) ';
             $this->_query .= ' VALUES (';
         } else {
             $this->_query .= " SET ";