diff --git a/apps/contactsinteraction/lib/Card.php b/apps/contactsinteraction/lib/Card.php
index 2cacd7ad54..4134924c2c 100644
--- a/apps/contactsinteraction/lib/Card.php
+++ b/apps/contactsinteraction/lib/Card.php
@@ -53,7 +53,7 @@ class Card implements ICard, IACL {
 	 * @inheritDoc
 	 */
 	public function getOwner(): ?string {
-		$this->principal;
+		return $this->principal;
 	}
 
 	/**