1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/system/activation/top-level.nix b/nixos/modules/system/activation/top-level.nix
index 7b1c7d611d3..06b857297ac 100644
--- a/nixos/modules/system/activation/top-level.nix
+++ b/nixos/modules/system/activation/top-level.nix
@@ -155,7 +155,7 @@ in
     system.boot.loader.kernelFile = mkOption {
       internal = true;
       default = pkgs.stdenv.platform.kernelTarget;
-      type = types.uniq types.string;
+      type = types.str;
       description = ''
         Name of the kernel file to be passed to the bootloader.
       '';