diff --git a/MysqliDb.php b/MysqliDb.php
index f9186a62..aa099b00 100644
--- a/MysqliDb.php
+++ b/MysqliDb.php
@@ -1469,6 +1469,7 @@ protected function _buildLimit($numRows)
     protected function _prepareQuery()
     {
         if (!$stmt = $this->mysqli()->prepare($this->_query)) {
+            $this->reset();
             throw new Exception("Problem preparing query ($this->_query) " . $this->mysqli()->error);
         }