Fix #3112
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index 7cbcf10..a827a6e 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -336,9 +336,7 @@
 	 */
 	protected function _escape_str($str)
 	{
-		return is_resource($this->conn_id)
-			? mysql_real_escape_string($str, $this->conn_id)
-			: addslashes($str);
+		return mysql_real_escape_string($str, $this->conn_id);
 	}
 
 	// --------------------------------------------------------------------