diff --git a/mod.nix b/mod.nix
index d62111a..73599c9 100644
--- a/mod.nix
+++ b/mod.nix
@@ -73,8 +73,7 @@ in
         };
     };
     environment.systemPackages = optionals cfgc.enable [
-      (pkgs.writeScriptBin "brownpaper" ''
-    	#!${pkgs.bash}/bin/bash
+      (pkgs.writeShellScriptBin "brownpaper" ''
         BROWNPAPER_ENDPOINT='${cfgc.endpoint}' ${(pkgs.callPackage ./. { inherit pkgs; src = ./.; }).client}/bin/brownpaper "$@"
       '')
     ];