diff --git a/rust/default.nix b/rust/default.nix
index ec6abe7..db9162f 100644
--- a/rust/default.nix
+++ b/rust/default.nix
@@ -180,10 +180,9 @@
           # Accessible through 'nix build', 'nix shell', 'nix run', etc
           packages = lib.mkIf cfg.package.enable {
             ${cfg.package.name} =
-              craneLib.buildPackage {
+              craneLib.buildPackage ({
                 inherit src buildInputs nativeBuildInputs cargoArtifacts;
-              }
-              // cfg.package.extraAttrs;
+              } // cfg.package.extraAttrs);
           };
 
           # Formatter for nix files, available through 'nix fmt'