diff --git a/nixos/modules/system/boot/binfmt.nix b/nixos/modules/system/boot/binfmt.nix
index d16152ab9dec..08e3dce70844 100644
--- a/nixos/modules/system/boot/binfmt.nix
+++ b/nixos/modules/system/boot/binfmt.nix
@@ -1,6 +1,6 @@
 { config, lib, pkgs, ... }:
 let
-  inherit (lib) mkOption mkDefault types optionalString stringAfter;
+  inherit (lib) mkOption mkDefault types optionalString;
 
   cfg = config.boot.binfmt;