diff --git a/mflag/example/example.go b/mflag/example/example.go
index b0d25fb..352f652 100644
--- a/mflag/example/example.go
+++ b/mflag/example/example.go
@@ -12,6 +12,7 @@ var (
 )
 
 func init() {
+	flag.Bool([]string{"#hp", "#-halp"}, false, "display the halp")
 	flag.BoolVar(&b, []string{"b"}, false, "a simple bool")
 	flag.BoolVar(&b2, []string{"-bool"}, false, "a simple bool")
 	flag.IntVar(&i, []string{"#integer", "-integer"}, -1, "a simple integer")
diff --git a/mflag/flag.go b/mflag/flag.go
index 6fe3e41..ff0de23 100644
--- a/mflag/flag.go
+++ b/mflag/flag.go
@@ -404,7 +404,9 @@ func (f *FlagSet) PrintDefaults() {
 				names = append(names, name)
 			}
 		}
-		fmt.Fprintf(f.out(), format, strings.Join(names, ", -"), flag.DefValue, flag.Usage)
+		if len(names) > 0 {
+			fmt.Fprintf(f.out(), format, strings.Join(names, ", -"), flag.DefValue, flag.Usage)
+		}
 	})
 }