1 files changed, 1 insertions, 1 deletions

diff --git a/system-profiles/build-server/default.nix b/system-profiles/build-server/default.nix
index 9c821f64..d0bfaf10 100644
--- a/system-profiles/build-server/default.nix
+++ b/system-profiles/build-server/default.nix
@@ -28,7 +28,7 @@
 
     users.users.nix-ssh-builder.openssh.authorizedKeys.keys =
       let
-        importKeys = dir: lib.attrValues (customUtils.mapFilterAttrs (_: v: v == "directory") (n: _: lib.nameValuePair n (importKeys' dir n)) (builtins.readDir dir));
+        importKeys = dir: lib.attrValues (customUtils.mapFilterAttrs (_: v: v != null) (n: v: lib.nameValuePair n (if v == "directory" then importKeys' dir n else null)) (builtins.readDir dir));
         importKeys' = dir: host: builtins.readFile (dir + "/${host}/public");
       in importKeys ./clients;
   };