diff --git a/pkgs/build-support/writers/default.nix b/pkgs/build-support/writers/default.nix
index ca0184beeb0c..2c26f350fbd7 100644
--- a/pkgs/build-support/writers/default.nix
+++ b/pkgs/build-support/writers/default.nix
@@ -71,12 +71,12 @@ let
     let
       name = last (builtins.split "/" nameOrPath);
     in
-    pkgs.runCommand name (if (types.str.check content) then {
+    pkgs.runCommand name ((if (types.str.check content) then {
       inherit content;
       passAsFile = [ "content" ];
     } else {
       contentPath = content;
-    } // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) {
+    }) // lib.optionalAttrs (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) {
       # post-link-hook expects codesign_allocate to be in PATH
       # https://github.com/NixOS/nixpkgs/issues/154203
       # https://github.com/NixOS/nixpkgs/issues/148189