diff --git a/artiq-fast.nix b/artiq-fast.nix
index 8989d12..5e173e2 100644
--- a/artiq-fast.nix
+++ b/artiq-fast.nix
@@ -75,7 +75,7 @@ in
       mkdir $HOME/.ssh
       cp /opt/hydra_id_rsa $HOME/.ssh/id_rsa
       cp /opt/hydra_id_rsa.pub $HOME/.ssh/id_rsa.pub
-      echo "rpi-1,192.168.1.188 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMc7waNkP2HjL5Eo94evoxJhC8CbYj4i2n1THe5TPIR3" > $HOME/.ssh/known_hosts
+      echo "rpi-1 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMc7waNkP2HjL5Eo94evoxJhC8CbYj4i2n1THe5TPIR3" > $HOME/.ssh/known_hosts
       chmod 600 $HOME/.ssh/id_rsa
       LOCKCTL=$(mktemp -d)
       mkfifo $LOCKCTL/lockctl