diff -r 25db238bf03f -r 24ca1bf4a0bf goduf.go
--- a/goduf.go	Sun Oct 14 15:23:11 2018 +0200
+++ b/goduf.go	Sun Oct 14 15:33:53 2018 +0200
@@ -447,34 +447,6 @@
 	return
 }
 
-// formatSize returns the size in a string with a human-readable format.
-func formatSize(sizeBytes uint64, short bool) string {
-	var units = map[int]string{
-		0: "B",
-		1: "KiB",
-		2: "MiB",
-		3: "GiB",
-		4: "TiB",
-		5: "PiB",
-	}
-	humanSize := sizeBytes
-	var n int
-	for n < len(units)-1 {
-		if humanSize < 10000 {
-			break
-		}
-		humanSize /= 1024
-		n++
-	}
-	if n < 1 {
-		return fmt.Sprintf("%d bytes", sizeBytes)
-	}
-	if short {
-		return fmt.Sprintf("%d %s", humanSize, units[n])
-	}
-	return fmt.Sprintf("%d bytes (%d %s)", sizeBytes, humanSize, units[n])
-}
-
 func duf(dirs []string, options Options) (Results, error) {
 	var verbose bool
 	if myLog.verbosity > 0 {