diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
index 4b1c283..8423180 100644
--- a/system/database/drivers/cubrid/cubrid_forge.php
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -70,7 +70,7 @@
 	 * @param	mixed	the fields
 	 * @return	string
 	 */
-	private function _process_fields($fields)
+	protected function _process_fields($fields)
 	{
 		$current_field_count = 0;
 		$sql = '';