diff --git a/options.go b/options.go
index e210d10..714bbcb 100644
--- a/options.go
+++ b/options.go
@@ -65,8 +65,8 @@ func NoDefaultHelp() Option {
 // parsing occurs.
 //
 // This is useful for, e.g., adding short options to flags, updating help, etc.
-func (k *Kong) PostBuild(fn func(*Kong)error) Option {
-	return OptionFunc(func (k *Kong) error {
+func (k *Kong) PostBuild(fn func(*Kong) error) Option {
+	return OptionFunc(func(k *Kong) error {
 		k.postBuildOptions = append(k.postBuildOptions, OptionFunc(fn))
 		return nil
 	})