diff --git a/html/includes/graphs/multiport/bits.inc.php b/html/includes/graphs/multiport/bits.inc.php
index 1a22e1b6c..14ca12793 100644
--- a/html/includes/graphs/multiport/bits.inc.php
+++ b/html/includes/graphs/multiport/bits.inc.php
@@ -11,9 +11,9 @@ foreach (explode(",", $id) as $ifid)
   }
 
   $int = dbFetchRow("SELECT `ifIndex`, `hostname` FROM `ports` AS I, devices as D WHERE I.interface_id = ? AND I.device_id = D.device_id", array($ifid));
-  if (is_file($config['rrd_dir'] . "/" . $int[1] . "/port-" . safename($int[0] . ".rrd")))
+  if (is_file($config['rrd_dir'] . "/" . $int['hostname'] . "/port-" . safename($int['ifIndex'] . ".rrd")))
   {
-    $rrd_filenames[$i] = $config['rrd_dir'] . "/" . $int[1] . "/port-" . safename($int[0] . ".rrd");
+    $rrd_filenames[$i] = $config['rrd_dir'] . "/" . $int['hostname'] . "/port-" . safename($int['ifIndex'] . ".rrd");
     $i++;
   }
 }