diff --git a/billing-calculate.php b/billing-calculate.php
index 0333d5c6ef..0b5bc086ce 100755
--- a/billing-calculate.php
+++ b/billing-calculate.php
@@ -19,7 +19,7 @@ foreach (dbFetchRows("SELECT * FROM `bills` ORDER BY `bill_name`") as $bill)
   echo(str_pad($bill['bill_id']." ".$bill['bill_name'], 30)." \n");
 
   $i=0;
-  while ($i <= 12)
+  while ($i <= 24)
   {
     unset($class);
     unset($rate_data);
diff --git a/html/pages/bill/history.inc.php b/html/pages/bill/history.inc.php
index 74795c31ff..c40781bb30 100644
--- a/html/pages/bill/history.inc.php
+++ b/html/pages/bill/history.inc.php
@@ -5,8 +5,6 @@
 //  $url         = $PHP_SELF."/bill/".$bill_id."/history/";
   $i           = 0;
 
-  $gbconvert   = $config['billing']['base'];
-
   $img['his']  = "<img src=\"bandwidth-graph.php?bill_id=".$bill_id;
   $img['his'] .= "&amp;type=historical";
   $img['his'] .= "&amp;x=1190&amp;y=250";