diff --git a/ajax/bandwidth/get_bandwidth.php b/ajax/bandwidth/get_bandwidth.php
index 04c1fc03..4fcf8057 100644
--- a/ajax/bandwidth/get_bandwidth.php
+++ b/ajax/bandwidth/get_bandwidth.php
@@ -49,6 +49,7 @@ if ($timeunits === 'm') {
 }
 
 $datasizeunits = filter_input(INPUT_GET, 'dsu');
+$dsu_factor = $datasizeunits == "mb" ? 1024 * 1024 : 1024;
 header('X-Content-Type-Options: nosniff');
 header('Content-Type: application/json');
 echo '[ ';
@@ -73,13 +74,8 @@ for ($i = count($jsonData) - 1; $i >= 0; --$i) {
         echo ',';
     }
 
-    if ($datasizeunits == 'mb') {
-        $datasend = round($jsonData[$i]['tx'] / 1024, 0);
-        $datareceived = round($jsonData[$i]['rx'] / 1024, 0);
-    } else {
-        $datasend = $jsonData[$i]['rx'];
-        $datareceived = $jsonData[$i]['rx'];
-    }
+    $datasend = round($jsonData[$i]['tx'] / $dsu_factor, 0);
+    $datareceived = round($jsonData[$i]['rx'] / $dsu_factor, 0);
 
     if ($timeunits === 'm') {
         echo '{ "date": "' , $dt->format('Y-m') , '", "rx": "' , $datareceived , 
diff --git a/ajax/bandwidth/get_bandwidth_hourly.php b/ajax/bandwidth/get_bandwidth_hourly.php
index a8e0f5cc..5e2f93f1 100644
--- a/ajax/bandwidth/get_bandwidth_hourly.php
+++ b/ajax/bandwidth/get_bandwidth_hourly.php
@@ -39,11 +39,14 @@ if (filter_input(INPUT_GET, 'tu') == 'h') {
         exit('vnstat error');
     }
 
+    $datasizeunits = filter_input(INPUT_GET, 'dsu');
+    $dsu_factor = $datasizeunits == "mb" ? 1024 * 1024 : 1024;
+
     $jsonobj = json_decode($jsonstdoutvnstat[0], true)['interfaces'][0];
     $jsonData = $jsonobj['traffic']['hour'];
-    for ($i = count($jsonData) - 1; $i >= 0; --$i) {
-        $data_template[$jsonData[$i]['time']['hour']]['rx'] = round($jsonData[$i]['rx'] / 1024, 0);
-        $data_template[$jsonData[$i]['time']['hour']]['tx'] = round($jsonData[$i]['tx'] / 1024, 0);
+    for ($i = count($jsonData) - 1; $i >= 0 && $i >= count($jsonData)-25; --$i) {
+        $data_template[$jsonData[$i]['time']['hour']]['rx'] = round($jsonData[$i]['rx'] / $dsu_factor, 0);
+        $data_template[$jsonData[$i]['time']['hour']]['tx'] = round($jsonData[$i]['tx'] / $dsu_factor, 0);
     }
 
     $data = array();