diff --git a/docker-rsync/hosts-add b/docker-rsync/hosts-add
index bd2c1df..45a3d04 100755
--- a/docker-rsync/hosts-add
+++ b/docker-rsync/hosts-add
@@ -2,4 +2,4 @@
 
 set -euo pipefail
 
-echo "$@" >> ~/.ssh/known_hosts
+printf '%s\n' "$@" >> ~/.ssh/known_hosts