diff --git a/apps/dav/lib/comments/commentsplugin.php b/apps/dav/lib/comments/commentsplugin.php
index 282c14df1e..56d94cc33e 100644
--- a/apps/dav/lib/comments/commentsplugin.php
+++ b/apps/dav/lib/comments/commentsplugin.php
@@ -116,6 +116,11 @@ class CommentsPlugin extends ServerPlugin {
 			$data,
 			$request->getHeader('Content-Type')
 		);
+
+		// update read marker for the current user/poster to avoid
+		// having their own comments marked as unread
+		$node->setReadMarker(null);
+
 		$url = $request->getUrl() . '/' . urlencode($comment->getId());
 
 		$response->setHeader('Content-Location', $url);
diff --git a/apps/dav/tests/unit/comments/commentsplugin.php b/apps/dav/tests/unit/comments/commentsplugin.php
index bd0b56fc65..9822137bbe 100644
--- a/apps/dav/tests/unit/comments/commentsplugin.php
+++ b/apps/dav/tests/unit/comments/commentsplugin.php
@@ -92,6 +92,10 @@ class CommentsPlugin extends \Test\TestCase {
 			->method('getId')
 			->will($this->returnValue('42'));
 
+		$node->expects($this->once())
+			->method('setReadMarker')
+			->with(null);
+
 		$this->commentsManager->expects($this->once())
 			->method('create')
 			->with('users', 'alice', 'files', '42')