diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index a035d0021..fcf177d83 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -1482,7 +1482,7 @@ class Contact
 		$contact_field = ((($contact["contact-type"] == self::TYPE_COMMUNITY) || ($contact['network'] == Protocol::MAIL)) ? 'owner-id' : 'author-id');
 
 		if ($thread_mode) {
-			$condition = ["((`$contact_field` = ? AND `gravity` = ?) OR (`author-id` = ? AND `gravity` = ? AND `vid` = ?)) AND " . $sql,
+			$condition = ["((`$contact_field` = ? AND `gravity` = ?) OR (`author-id` = ? AND `gravity` = ? AND `vid` = ? AND `thr-parent-id` = `parent-uri-id`)) AND " . $sql,
 				$cid, GRAVITY_PARENT, $cid, GRAVITY_ACTIVITY, Verb::getID(Activity::ANNOUNCE), local_user()];
 		} else {
 			$condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,