diff --git a/examples/io/single/main.go b/examples/io/single/main.go
index 2986d7e..a5eb2e4 100644
--- a/examples/io/single/main.go
+++ b/examples/io/single/main.go
@@ -48,7 +48,7 @@
 			decor.CountersKibiByte("% 6.1f / % 6.1f"),
 		),
 		mpb.AppendDecorators(
-			decor.EwmaETA(decor.ET_STYLE_MMSS, 1024*8),
+			decor.EwmaETA(decor.ET_STYLE_MMSS, float64(size)/2048),
 			decor.Name(" ] "),
 			decor.AverageSpeed(decor.UnitKiB, "% .2f"),
 		),