diff --git a/setup-sshd.sh b/setup-sshd.sh
index 6a4574c..5d51dca 100755
--- a/setup-sshd.sh
+++ b/setup-sshd.sh
@@ -5,7 +5,7 @@ if ! echo "$SSH_PUBKEY" | grep -q "^ssh-.*$"; then
     sleep inf
 fi
 
-ssh-keygen -A
+ssh-keygen -A -f /tmp
 mkdir -vp /tmp/.ssh
 echo "$SSH_PUBKEY" | tee -a /tmp/.ssh/authorized_keys