diff --git a/os/remote-builds/default.nix b/os/remote-builds/default.nix
index dc0ee40..2672e3f 100644
--- a/os/remote-builds/default.nix
+++ b/os/remote-builds/default.nix
@@ -42,8 +42,8 @@ in
       settings = {
         builders-use-substitutes = true;
         trusted-public-keys = publicKeys;
+        substituters = builtins.map (builder: "${builder.protocol}://${builder.sshUser}@${builder.hostName}") config.nix.buildMachines;
       };
     };
   };
 }
-# TODO Make it work. I think it just doesn't like non-standard SSH ports.