diff --git a/admin/site_update.php b/admin/site_update.php
index 2c3a4eebe..fc69a940b 100644
--- a/admin/site_update.php
+++ b/admin/site_update.php
@@ -240,7 +240,20 @@ SELECT IF(MAX(id)+1 IS NULL, 1, MAX(id)+1) AS next_id
     array_push($fs_fulldirs, $basedir);
   }
 
-  $inserts = array();
+  // If $_POST['subcats-included'] != 1 ("Search in subcategories" is unchecked)
+  // $db_fulldirs doesn't include any subdirectories and $fs_fulldirs does
+  // So $fs_fulldirs will be limited to the selected basedir 
+  // (if that one is in $fs_fulldirs)
+  if (!isset($_POST['subcats-included']) or $_POST['subcats-included'] != 1)
+  {
+    $fs_fulldirs = array_intersect($fs_fulldirs, array_keys($db_fulldirs));
+  }
+  // print_r( $fs_fulldirs ); echo "<br>";
+  // print_r( $db_fulldirs ); echo "<br>";
+  // print_r( array_diff($fs_fulldirs, array_keys($db_fulldirs)) ); echo "<br>";
+  // die('That\'s why dirs or files synchronizations were duplicating cats.');
+
+  $inserts = array();  
   // new categories are the directories not present yet in the database
   foreach (array_diff($fs_fulldirs, array_keys($db_fulldirs)) as $fulldir)
   {
diff --git a/template/yoga/admin/site_update.tpl b/template/yoga/admin/site_update.tpl
index c739562ba..b16f27645 100644
--- a/template/yoga/admin/site_update.tpl
+++ b/template/yoga/admin/site_update.tpl
@@ -97,10 +97,9 @@
     </li>
 
     <li><label>
-    <img class="button" src="{themeconf:icon_dir}/check.png" alt="checked checkbox">
-    <input type="HIDDEN" name="subcats-included" value="1" {SUBCATS_INCLUDED_CHECKED} />
+    <input type="checkbox" name="subcats-included" value="1" {SUBCATS_INCLUDED_CHECKED} />
 {lang:search_subcats_included}</label>
- / (<strong>Warning</strong>: Locked control, contact our forum if needed).</li>
+    </li>
     </ul>
   </fieldset>