diff --git a/lib/Note.lib.php b/lib/Note.lib.php
index ba10299..0ccccba 100644
--- a/lib/Note.lib.php
+++ b/lib/Note.lib.php
@@ -380,7 +380,7 @@ class Note {
             'content' => $this->getText(),
             'html' => $this->getHTML(true),
             'title' => $this->getTitle(),
-            'modified' => $this->getModified(),
+            'modified' => strtotime($this->getModified()),
             'favorite' => $this->getFavorite(),
             'owner' => [
                 'uid' => $owner->getUID(),