diff --git a/apps/dav/lib/Connector/Sabre/Node.php b/apps/dav/lib/Connector/Sabre/Node.php
index b6433e6e0ba..32ba6c53a0c 100644
--- a/apps/dav/lib/Connector/Sabre/Node.php
+++ b/apps/dav/lib/Connector/Sabre/Node.php
@@ -297,7 +297,7 @@ abstract class Node implements \Sabre\DAV\INode {
 	 * @return string
 	 */
 	public function getNoteFromShare($user) {
-		if ($user == null) {
+		if ($user === null) {
 			return '';
 		}