diff --git a/decor/speed.go b/decor/speed.go
index 5021fd5..25bb187 100644
--- a/decor/speed.go
+++ b/decor/speed.go
@@ -85,8 +85,7 @@
 
 	var speed float64
 	if v := math.Round(d.average.Value()); v != 0 {
-		current := float64(st.Current)
-		speed = current / (current * time.Duration(v).Seconds())
+		speed = 1 / time.Duration(v).Seconds()
 	}
 
 	d.msg = d.producer(speed)