diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index 5b118ce..d2d2632 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -1665,9 +1665,10 @@
 									'ar_cache_where'	=> array(), 
 									'ar_cache_like'		=> array(), 
 									'ar_cache_groupby'	=> array(), 
-									'ar_cache_having'	=>array(), 
+									'ar_cache_having'	=> array(), 
 									'ar_cache_orderby'	=> array(), 
-									'ar_cache_set'		=> array()
+									'ar_cache_set'		=> array(),
+									'ar_cache_exists'	=> array()
 								);
 
 		$this->_reset_run($ar_reset_items);