diff --git a/apps/files_sharing/publicwebdav.php b/apps/files_sharing/publicwebdav.php
index 3a961f5d75..6e1583eb4f 100644
--- a/apps/files_sharing/publicwebdav.php
+++ b/apps/files_sharing/publicwebdav.php
@@ -56,9 +56,10 @@ $server->addPlugin(new \OC\Connector\Sabre\ExceptionLoggerPlugin('webdav', \OC::
 // wait with registering these until auth is handled and the filesystem is setup
 $server->on('beforeMethod', function () use ($server, $objectTree, $authBackend) {
 	$share = $authBackend->getShare();
-	$owner = $share['uid_owner'];
-	$isWritable = $share['permissions'] & (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_CREATE);
-	$fileId = $share['file_source'];
+	$rootShare = \OCP\Share::resolveReShare($share);
+	$owner = $rootShare['uid_owner'];
+	$isWritable = $rootShare['permissions'] & (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_CREATE);
+	$fileId = $rootShare['file_source'];
 
 	if (!$isWritable) {
 		\OC\Files\Filesystem::addStorageWrapper('readonly', function ($mountPoint, $storage) {