--- a/heuristics/heuristics.inc.php
+++ b/heuristics/heuristics.inc.php
@@ -3,13 +3,13 @@
 $heuristics = Array();
 //each heuristic adds self to description array
 include ("dateHeuristics.php");
-//include ("historyHeuristics.php");
+include ("historyHeuristics.php");
 //include ("metadataHeuristics.php");
 //include ("valueHeuristics.php");
 function runHeuristic($heuristicName, $cn)
 {
 	// check  if already ran
-	$query = "select count(*) from heuristic_results where heuristic_name = '$heuristicName' and CNID = '{$CN['CNID']}";
+	$query = "select count(*) from heuristic_results where heuristic_name = '$heuristicName' and CNID = '{$cn['CNID']}'";
 	$result = mysql_query($query);
 	$r = mysql_fetch_array($result);
 	if ($r[0] == 0) {
@@ -37,3 +37,4 @@
 	}
 }
 ?>
+