diff --git a/include/api.php b/include/api.php
index 3f4d5625b0..b21061646a 100644
--- a/include/api.php
+++ b/include/api.php
@@ -5957,11 +5957,11 @@ function api_friendica_notification_seen($type)
 	$id = (!empty($_REQUEST['id']) ? intval($_REQUEST['id']) : 0);
 
 	try {
-		$notification = DI::notify()->getByID($id);
-		$notification->setSeen();
+		$notify = DI::notify()->getByID($id);
+		DI::notify()->setSeen(true, $notify);
 
-		if ($notification->otype === Notify::OTYPE_ITEM) {
-			$item = Item::selectFirstForUser(api_user(), [], ['id' => $notification->iid, 'uid' => api_user()]);
+		if ($notify->otype === Notify::OTYPE_ITEM) {
+			$item = Item::selectFirstForUser(api_user(), [], ['id' => $notify->iid, 'uid' => api_user()]);
 			if (DBA::isResult($item)) {
 				// we found the item, return it to the user
 				$ret  = api_format_items([$item], $user_info, false, $type);
@@ -5973,6 +5973,8 @@ function api_friendica_notification_seen($type)
 		return api_format_data('result', $type, ['result' => "success"]);
 	} catch (NotFoundException $e) {
 		throw new BadRequestException('Invalid argument');
+	} catch (Exception $e) {
+		throw new InternalServerErrorException('Internal Server exception');
 	}
 }
 
diff --git a/src/Model/Notify.php b/src/Model/Notify.php
index b12eb341b0..35d72384e8 100644
--- a/src/Model/Notify.php
+++ b/src/Model/Notify.php
@@ -2,7 +2,6 @@
 
 namespace Friendica\Model;
 
-use Exception;
 use Friendica\BaseModel;
 use Friendica\Content\Text\BBCode;
 use Friendica\Database\Database;
@@ -50,24 +49,6 @@ class Notify extends BaseModel
 		$this->setMsgCache();
 	}
 
-	/**
-	 * Set the notification as seen
-	 *
-	 * @param bool $seen true, if seen
-	 *
-	 * @return bool True, if the seen state could be saved
-	 */
-	public function setSeen(bool $seen = true)
-	{
-		$this->seen = $seen;
-		try {
-			return $this->repo->update($this);
-		} catch (Exception $e) {
-			$this->logger->warning('Update failed.', ['$this' => $this, 'exception' => $e]);
-			return false;
-		}
-	}
-
 	/**
 	 * Sets the pre-formatted name (caching)
 	 */
diff --git a/src/Module/Notifications/Notification.php b/src/Module/Notifications/Notification.php
index 6df58374ec..34ab3d5ace 100644
--- a/src/Module/Notifications/Notification.php
+++ b/src/Module/Notifications/Notification.php
@@ -44,8 +44,8 @@ class Notification extends BaseModule
 		// @TODO: Replace with parameter from router
 		if (DI::args()->get(1) === 'mark' && DI::args()->get(2) === 'all') {
 			try {
-				$success = DI::notify()->setAllSeen();
-			}catch (\Exception $e) {
+				$success = DI::notify()->setSeen();
+			} catch (\Exception $e) {
 				DI::logger()->warning('set all seen failed.', ['exception' => $e]);
 				$success = false;
 			}
@@ -66,11 +66,11 @@ class Notification extends BaseModule
 
 		if ($request_id) {
 			try {
-				$notification = DI::notify()->getByID($request_id);
-				$notification->setSeen();
+				$notify = DI::notify()->getByID($request_id);
+				DI::notify()->setSeen(true, $notify);
 
-				if (!empty($notification->link)) {
-					System::externalRedirect($notification->link);
+				if (!empty($notify->link)) {
+					System::externalRedirect($notify->link);
 				}
 
 			} catch (HTTPException\NotFoundException $e) {
@@ -83,4 +83,3 @@ class Notification extends BaseModule
 		DI::baseUrl()->redirect('notifications/system');
 	}
 }
-
diff --git a/src/Repository/Notify.php b/src/Repository/Notify.php
index 8c71fc289a..b53bd84411 100644
--- a/src/Repository/Notify.php
+++ b/src/Repository/Notify.php
@@ -7,6 +7,7 @@ use Friendica\BaseRepository;
 use Friendica\Core\Hook;
 use Friendica\Model;
 use Friendica\Collection;
+use Friendica\Network\HTTPException\InternalServerErrorException;
 use Friendica\Network\HTTPException\NotFoundException;
 use Friendica\Util\DateTimeFormat;
 
@@ -52,14 +53,28 @@ class Notify extends BaseRepository
 	}
 
 	/**
-	 * {@inheritDoc}
+	 * Set seen state of notifications of the local_user()
+	 *
+	 * @param bool         $seen   optional true or false. default true
+	 * @param Model\Notify $notify optional a notify, which should be set seen (including his parents)
 	 *
 	 * @return bool true on success, false on error
+	 *
 	 * @throws Exception
 	 */
-	public function setAllSeen(bool $seen = true)
+	public function setSeen(bool $seen = true, Model\Notify $notify = null)
 	{
-		return $this->dba->update('notify', ['seen' => $seen], ['uid' => local_user()]);
+		if (empty($notify)) {
+			$conditions = ['uid' => local_user()];
+		} else {
+			$conditions = ['(`link` = ? OR (`parent` != 0 AND `parent` = ? AND `otype` = ?)) AND `uid` = ?',
+				$notify->link,
+				$notify->parent,
+				$notify->otype,
+				local_user()];
+		}
+
+		return $this->dba->update('notify', ['seen' => $seen], $conditions);
 	}
 
 	/**
@@ -67,12 +82,12 @@ class Notify extends BaseRepository
 	 *
 	 * @return Model\Notify|false
 	 *
-	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws InternalServerErrorException
 	 * @throws Exception
 	 */
 	public function insert(array $fields)
 	{
-		$fields['date']  = DateTimeFormat::utcNow();
+		$fields['date'] = DateTimeFormat::utcNow();
 
 		Hook::callAll('enotify_store', $fields);