diff --git a/module/doc/lang/de.php b/module/doc/lang/de.php
index ddd6f58183..de3c45d8fe 100644
--- a/module/doc/lang/de.php
+++ b/module/doc/lang/de.php
@@ -206,7 +206,7 @@ $lang->doc->noticeAcl['doc']['private'] = 'Only the one who created it can acces
 $lang->doc->placeholder = new stdclass();
 $lang->doc->placeholder->url = 'Url';
 
-$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>";
+$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>.";
 $lang->doc->ge      = ':';
 $lang->doc->point   = '.';
 
diff --git a/module/doc/lang/en.php b/module/doc/lang/en.php
index ebe2fa3a25..86ad3fcb9c 100644
--- a/module/doc/lang/en.php
+++ b/module/doc/lang/en.php
@@ -211,7 +211,7 @@ $lang->doc->noticeAcl['doc']['private'] = 'Only the one who created it can acces
 $lang->doc->placeholder = new stdclass();
 $lang->doc->placeholder->url = 'URL';
 
-$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>";
+$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>.";
 $lang->doc->ge      = ':';
 $lang->doc->point   = '.';
 
diff --git a/module/doc/lang/fr.php b/module/doc/lang/fr.php
index 69bb0a4d42..b7130464e3 100644
--- a/module/doc/lang/fr.php
+++ b/module/doc/lang/fr.php
@@ -206,7 +206,7 @@ $lang->doc->noticeAcl['doc']['private'] = 'Seulement celui qui a ajouté le docu
 $lang->doc->placeholder = new stdclass();
 $lang->doc->placeholder->url = 'URL';
 
-$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>";
+$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>.";
 $lang->doc->ge      = ':';
 $lang->doc->point   = '.';
 
diff --git a/module/doc/lang/vi.php b/module/doc/lang/vi.php
index 76edcec8a6..6104d9e766 100644
--- a/module/doc/lang/vi.php
+++ b/module/doc/lang/vi.php
@@ -206,7 +206,7 @@ $lang->doc->noticeAcl['doc']['private'] = 'Chỉ the one who created it có th
 $lang->doc->placeholder = new stdclass();
 $lang->doc->placeholder->url = 'URL';
 
-$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>";
+$lang->doc->summary = "Total files on this page: <strong>%s</strong> , total size: <strong>%s</strong>, <strong>%s</strong>.";
 $lang->doc->ge      = ':';
 $lang->doc->point   = '.';
 
diff --git a/module/doc/model.php b/module/doc/model.php
index 6d5782bedb..b9c15f5a00 100644
--- a/module/doc/model.php
+++ b/module/doc/model.php
@@ -2219,30 +2219,27 @@ EOT;
 
         /* Unit conversion. */
         $i = 0;
-        while($sizeCount > 1024)
+        while($sizeCount > 1024 and $i <= 4)
         {
             $sizeCount = $sizeCount / 1024;
             $i ++;
         }
-        $unitList  = array('B', 'K', 'M', 'G');
+        $unitList  = array('B', 'K', 'M', 'G', 'T');
         $sizeCount = round($sizeCount, 1) . $unitList[$i];
 
         /* Summary of each type. */
-        $extensionNum = count($extensionCount);
         foreach($extensionCount as $extension => $count)
         {
             if(in_array($this->app->getClientLang(), ['zh-cn','zh-tw']))
             {
-                $extensionSummary .= $extension . ' ' . $count . $this->lang->doc->ge;
-
-                $extensionNum--;
-                if(!empty($extensionNum)) $extensionSummary .= $this->lang->doc->point;
+                $extensionSummary .= $extension . ' ' . $count . $this->lang->doc->ge . $this->lang->doc->point;
             }
             else
             {
                 $extensionSummary .= $extension . ' ' . $this->lang->doc->ge . ' ' . $count . $this->lang->doc->point;
             }
         }
+        $extensionSummary = rtrim($extensionSummary, $this->lang->doc->point);
 
         return sprintf($this->lang->doc->summary, $filesCount, $sizeCount, $extensionSummary);
     }