diff --git a/lib/private/Tags.php b/lib/private/Tags.php
index 3426a5a2ee8f9..37462a42ab9e6 100644
--- a/lib/private/Tags.php
+++ b/lib/private/Tags.php
@@ -314,8 +314,8 @@ public function add(string $name) {
 			]);
 			return false;
 		}
-		$this->logger->debug(__METHOD__ . ' Added an tag with ' . $tag->getId(), ['app' => 'core']);
-		return $tag->getId();
+		$this->logger->debug(__METHOD__ . ' Added an tag with ' . ($tag->getId() ?? ''), ['app' => 'core']);
+		return $tag->getId() ?? false;
 	}
 
 	/**