diff --git a/hosts/tadpole/modules/ssh/default.nix b/hosts/tadpole/modules/ssh/default.nix
index 55d5d37..dbaba29 100644
--- a/hosts/tadpole/modules/ssh/default.nix
+++ b/hosts/tadpole/modules/ssh/default.nix
@@ -48,6 +48,7 @@ in
       mode = "0755";
       text = ''
         #!${pkgs.bash}/bin/bash
+        [ "$1" = "alex" ] || exit 0
         for file in ${authorizedKeysPath}/*; do
           ${pkgs.coreutils}/bin/cat "$file"
         done
@@ -71,7 +72,7 @@ in
           KbdInteractiveAuthentication = false;
         };
 
-        authorizedKeysCommand = "/etc/ssh/authorized_keys_command";
+        authorizedKeysCommand = "/etc/ssh/authorized_keys_command %u";
         authorizedKeysCommandUser = "root";
       };
     };