diff --git a/bar_filler_bar.go b/bar_filler_bar.go
index 4ae2e08..48d301e 100644
--- a/bar_filler_bar.go
+++ b/bar_filler_bar.go
@@ -99,7 +99,7 @@
 }
 
 func (s *barFiller) Fill(w io.Writer, reqWidth int, stat decor.Statistics) {
-	width := internal.CalcWidthForBarFiller(reqWidth, stat.AvailableWidth)
+	width := internal.WidthForBarFiller(reqWidth, stat.AvailableWidth)
 
 	if brackets := s.rwidth[rLeft] + s.rwidth[rRight]; width < brackets {
 		return
diff --git a/bar_filler_spinner.go b/bar_filler_spinner.go
index c1afc6d..d2cb2b7 100644
--- a/bar_filler_spinner.go
+++ b/bar_filler_spinner.go
@@ -41,7 +41,7 @@
 }
 
 func (s *spinnerFiller) Fill(w io.Writer, reqWidth int, stat decor.Statistics) {
-	width := internal.CalcWidthForBarFiller(reqWidth, stat.AvailableWidth)
+	width := internal.WidthForBarFiller(reqWidth, stat.AvailableWidth)
 
 	frame := s.frames[s.count%uint(len(s.frames))]
 	frameWidth := utf8.RuneCountInString(frame)
diff --git a/internal/width.go b/internal/width.go
index 0d348be..35d5289 100644
--- a/internal/width.go
+++ b/internal/width.go
@@ -1,6 +1,6 @@
 package internal
 
-func CalcWidthForBarFiller(reqWidth, available int) int {
+func WidthForBarFiller(reqWidth, available int) int {
 	if reqWidth <= 0 || reqWidth >= available {
 		return available
 	}