diff --git a/webapp/src/Controller/Jury/SubmissionController.php b/webapp/src/Controller/Jury/SubmissionController.php
index 5f4cf38def..acca869506 100644
--- a/webapp/src/Controller/Jury/SubmissionController.php
+++ b/webapp/src/Controller/Jury/SubmissionController.php
@@ -889,10 +889,12 @@ public function sourceAction(
                 ->andWhere('s.problem = :probid')
                 ->andWhere('s.language = :langid')
                 ->andWhere('s.submittime < :submittime')
+                ->andWhere('s.contest = :contest')
                 ->setParameter('teamid', $submission->getTeam())
                 ->setParameter('probid', $submission->getProblem())
                 ->setParameter('langid', $submission->getLanguage())
                 ->setParameter('submittime', $submission->getSubmittime())
+                ->setParameter('contest', $submission->getContest())
                 ->orderBy('s.submittime', 'DESC')
                 ->setMaxResults(1)
                 ->getQuery()