diff --git a/lib/private/BackgroundJob/JobList.php b/lib/private/BackgroundJob/JobList.php
index e890c35868..44b6786841 100644
--- a/lib/private/BackgroundJob/JobList.php
+++ b/lib/private/BackgroundJob/JobList.php
@@ -273,7 +273,7 @@ class JobList implements IJobList {
 				}
 			}
 
-			$job->setId($row['id']);
+			$job->setId((int) $row['id']);
 			$job->setLastRun($row['last_run']);
 			$job->setArgument(json_decode($row['argument'], true));
 			return $job;