diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php
index 586c292..692d4f7 100644
--- a/system/database/drivers/mysqli/mysqli_result.php
+++ b/system/database/drivers/mysqli/mysqli_result.php
@@ -114,7 +114,7 @@
 	 */		
 	function free_result()
 	{
-		if (is_resource($this->result_id))
+		if (is_object($this->result_id))
 		{
 			mysqli_free_result($this->result_id);
 			$this->result_id = FALSE;