diff --git a/app.go b/app.go
index 2638fed..4c073c5 100644
--- a/app.go
+++ b/app.go
@@ -482,7 +482,7 @@ func (a *Author) String() string {
 }
 
 // DefaultAppComplete returns an ActionFunc to run a default command if non were passed.
-// Usage: `app.Action = DefaultCommand("command")`
+// Usage: `app.Action = cli.DefaultCommand("command")`
 func DefaultCommand(name string) ActionFunc {
 	return func(ctx *Context) error {
 		return ctx.App.Command(name).Run(ctx)
diff --git a/flag.go b/flag.go
index 9e71a51..d5ab42e 100644
--- a/flag.go
+++ b/flag.go
@@ -778,7 +778,7 @@ func visibleFlags(fl []Flag) []Flag {
 func prefixFor(name string) (prefix string) {
 	if len(name) == 1 {
 		prefix = "-"
-	} else if name[0] != '-' {
+	} else {
 		prefix = "--"
 	}