diff --git a/src/webui/explore.php b/src/webui/explore.php
index 6e77d4a..c558fbe 100644
--- a/src/webui/explore.php
+++ b/src/webui/explore.php
@@ -481,7 +481,7 @@ if ($config->webui->index->enabled)
           <?php } ?>
           <?php if (!empty($document->size)) { ?>
             <h3><?php echo _('Size') ?></h3>
-            <div><?php echo $document->size ?></div>
+            <div><?php echo sprintf('%d bytes', number_format($document->size)) ?></div>
           <?php } ?>
           <?php if (!empty($document->time)) { ?>
             <h3><?php echo _('Time') ?></h3>
@@ -497,7 +497,7 @@ if ($config->webui->index->enabled)
                     <?php foreach ($snap as $file) { ?>
                       <li>
                         <a rel="nofollow" href="api.php?action=snap&method=download&source=<?php echo $file->source ?>&id=<?php echo $file->id ?>&time=<?php echo $file->time ?>">
-                          <?php echo sprintf('%s (tar.gz / %s bytes)', date('c', $file->time), number_format($file->size)) ?>
+                          <?php echo sprintf('%s (tar.gz / %d bytes)', date('c', $file->time), number_format($file->size)) ?>
                         </a>
                       </li>
                     <?php } ?>