diff --git a/install.sh b/install.sh
index 548d54b..fe9a675 100755
--- a/install.sh
+++ b/install.sh
@@ -299,6 +299,7 @@ chroot ${target} useradd -u 200 -d /var/home/deploy -m -s /bin/bash -g operator
 chroot ${target} mkdir -p /var/home/deploy/.ssh
 if [[ -n ${target_keys_url} ]]; then
 wget -O ${target}/var/home/deploy/.ssh/authorized_keys ${target_keys_url}
+chmod 0600 /var/home/deploy/.ssh/authorized_keys
 else
 echo "${target_password}" | chroot ${target} passwd --stdin deploy >&2
 fi