diff --git a/docker/backup/make_backup.sh b/docker/backup/make_backup.sh
index e6812f0..f787dc3 100644
--- a/docker/backup/make_backup.sh
+++ b/docker/backup/make_backup.sh
@@ -9,4 +9,4 @@ cd /docker/compose/overleafredis
 sh backup.sh
 
 cd /docker/backup/
-rsync -avz --delete -e "ssh -i /docker/backup/backup" /docker overleaf@backup.zfn.uni-bremen.de:/home/overleaf/fb1/
+rsync -avz --exclude="*/dev/null" --exclude="*/dev/random" --exclude="*/dev/tty" --exclude="*/dev/urandom" --exclude="*/dev/zero" --delete -e "ssh -i /docker/backup/backup" /docker overleaf@backup.zfn.uni-bremen.de:/home/overleaf/fb1/