diff --git a/module/doc/ui/setdocbasic.html.php b/module/doc/ui/setdocbasic.html.php
index 6739a199f7..0b99fd76d8 100644
--- a/module/doc/ui/setdocbasic.html.php
+++ b/module/doc/ui/setdocbasic.html.php
@@ -90,7 +90,7 @@ formPanel
         (
             set::name('parent'),
             set::items($modalType != 'chapter' ? array(0 => '/') + $chapterAndDocs : $chapterAndDocs),
-            set::value(!empty($doc->parent) ? $doc->parent : $parentID),
+            set::value(!empty($doc->parent) ? $doc->parent : "m_{$doc->module}"),
             set::required(true)
         ),
     ) : null,