diff --git a/interface/web/mail/mail_user_stats.php b/interface/web/mail/mail_user_stats.php
index e922e3d7343e2f3a77c26b720acfd6d12227dfc8..6fd72e23bd9e1142314a2cc16906f4056e78b0bc 100644
--- a/interface/web/mail/mail_user_stats.php
+++ b/interface/web/mail/mail_user_stats.php
@@ -15,6 +15,8 @@ $list_def_file = "list/mail_user_stats.list.php";
 //* Check permissions for module
 $app->auth->check_module_permissions('mail');
 
+$app->uses('functions');
+
 $app->load('listform_actions');
 
 class list_action extends listform_actions {
@@ -33,22 +35,30 @@ class list_action extends listform_actions {
 		//** Traffic of the current month
 		$tmp_date = date('Y-m');
 		$tmp_rec = $app->db->queryOneRecord("SELECT traffic as t FROM mail_traffic WHERE mailuser_id = ".$app->functions->intval($rec['mailuser_id'])." AND month = '$tmp_date'");
-		$rec['this_month'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+//		$rec['this_month'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+		$rec['this_month'] = $app->functions->formatBytes($tmp_rec['t']);
+		if ($rec['this_month'] == 'NAN') $rec['this_month'] = '0 KB';
 
 		//** Traffic of the current year
 		$tmp_date = date('Y');
 		$tmp_rec = $app->db->queryOneRecord("SELECT sum(traffic) as t FROM mail_traffic WHERE mailuser_id = ".$app->functions->intval($rec['mailuser_id'])." AND month like '$tmp_date%'");
-		$rec['this_year'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+//		$rec['this_year'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+		$rec['this_year'] = $app->functions->formatBytes($tmp_rec['t']);
+		if ($rec['this_year'] == 'NAN') $rec['this_year'] = '0 KB';
 
 		//** Traffic of the last month
 		$tmp_date = date('Y-m', mktime(0, 0, 0, date("m")-1, date("d"), date("Y")));
 		$tmp_rec = $app->db->queryOneRecord("SELECT traffic as t FROM mail_traffic WHERE mailuser_id = ".$app->functions->intval($rec['mailuser_id'])." AND month = '$tmp_date'");
-		$rec['last_month'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+//		$rec['last_month'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+		$rec['last_month'] = $app->functions->formatBytes($tmp_rec['t']);
+		if ($rec['last_month'] == 'NAN') $rec['last_month'] = '0 KB';
 
 		//** Traffic of the last year
 		$tmp_date = date('Y', mktime(0, 0, 0, date("m"), date("d"), date("Y")-1));
 		$tmp_rec = $app->db->queryOneRecord("SELECT sum(traffic) as t FROM mail_traffic WHERE mailuser_id = ".$app->functions->intval($rec['mailuser_id'])." AND month like '$tmp_date%'");
-		$rec['last_year'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+//		$rec['last_year'] = number_format($app->functions->intval($tmp_rec['t'])/1024/1024, 0, '.', ' ');
+		$rec['last_year'] = $app->functions->formatBytes($tmp_rec['t']);
+		if ($rec['last_year'] == 'NAN') $rec['last_year'] = '0 KB';
 
 		//* The variable "id" contains always the index variable
 		$rec['id'] = $rec[$this->idx_key];
diff --git a/interface/web/mail/templates/mail_user_stats_list.htm b/interface/web/mail/templates/mail_user_stats_list.htm
index 5bd773c1ed0bad5ba723cccafa8fc66e337bb416..35e2235e62910c2a375c178e69b963b1aa04c697 100644
--- a/interface/web/mail/templates/mail_user_stats_list.htm
+++ b/interface/web/mail/templates/mail_user_stats_list.htm
@@ -30,10 +30,10 @@
                     <tmpl_loop name="records">
                         <tr class="tbl_row_<tmpl_if name='__EVEN__'}even<tmpl_else>uneven</tmpl_if>">
                             <td class="tbl_col_email"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="email"}</a></td>
-                            <td class="tbl_col_this_month"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="this_month"} MB</a></td>
-                            <td class="tbl_col_last_month"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="last_month"} MB</a></td>
-                            <td class="tbl_col_this_year"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="this_year"} MB</a></td>
-                            <td class="tbl_col_last_year"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="last_year"} MB</a></td>
+                            <td class="tbl_col_this_month"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="this_month"}</a></td>
+                            <td class="tbl_col_last_month"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="last_month"}</a></td>
+                            <td class="tbl_col_this_year"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="this_year"}</a></td>
+                            <td class="tbl_col_last_year"><a href="#" onclick="loadContent('mail/mail_user_edit.php?id={tmpl_var name='id'}');">{tmpl_var name="last_year"}</a></td>
                             <td class="tbl_col_buttons"></td>
                         </tr>
                     </tmpl_loop>
@@ -53,4 +53,4 @@
         </fieldset>
     </div>
 
-</div>
\ No newline at end of file
+</div>