diff --git a/settings/BackgroundJobs/VerifyUserData.php b/settings/BackgroundJobs/VerifyUserData.php
index 8c02ae1727..5e5b2b9c67 100644
--- a/settings/BackgroundJobs/VerifyUserData.php
+++ b/settings/BackgroundJobs/VerifyUserData.php
@@ -231,7 +231,7 @@ class VerifyUserData extends Job {
 
 			$body = json_decode($response->getBody(), true);
 
-			if ($body['federationId'] === $cloudId) {
+			if (is_array($body) && isset($body['federationId']) && $body['federationId'] === $cloudId) {
 				return $body;
 			}