diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php
index fea3bfe..3069d66 100644
--- a/system/database/drivers/ibase/ibase_driver.php
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -395,7 +395,7 @@
 	 */
 	protected function _insert_batch($table, $keys, $values)
 	{
-		return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE;
+		return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE;
 	}
 
 	// --------------------------------------------------------------------