diff --git a/makefu/2configs/remote-build/slave.nix b/makefu/2configs/remote-build/slave.nix
index b6e000a34..89121ffd6 100644
--- a/makefu/2configs/remote-build/slave.nix
+++ b/makefu/2configs/remote-build/slave.nix
@@ -1,11 +1,10 @@
-{
+{config,...}:{
   nix.trustedUsers = [ "nixBuild" ];
   users.users.nixBuild = {
       name = "nixBuild";
       useDefaultShell = true;
-      # TODO: put this somewhere else
       openssh.authorizedKeys.keys = [
-        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPlhb0TIBW9RN9T8Is4YRIc1RjOg+cxbZCaDjbM4zxrX nixBuild"
+        config.krebs.users.buildbotSlave.pubkey
       ];
     };
 }