diff --git a/backup/pvc/bin/backup.sh b/backup/pvc/bin/backup.sh
index d998b280..631ca5b8 100644
--- a/backup/pvc/bin/backup.sh
+++ b/backup/pvc/bin/backup.sh
@@ -11,5 +11,7 @@ echo "Running backup"
 
 tar -C ${JENKINS_HOME} -czf "${BACKUP_DIR}/${backup_number}.tar.gz" --exclude jobs/*/config.xml --exclude jobs/*/workspace* -c jobs
 
+[[ ! -s ${BACKUP_DIR}/${backup_number}.tar.gz ]] && echo "backup file '${BACKUP_DIR}/${backup_number}.tar.gz' is empty" && exit 1;
+
 echo Done
 exit 0
\ No newline at end of file