diff --git a/progress.go b/progress.go
index c981a49..e960862 100644
--- a/progress.go
+++ b/progress.go
@@ -175,7 +175,6 @@
 }
 
 // Format sets custom format for underlying bar(s).
-// The format string, must consist of ASCII characters only.
 // The default one is "[=>-]"
 func (p *Progress) Format(format string) *Progress {
 	if utf8.RuneCountInString(format) != 5 {