diff --git a/decor/speed.go b/decor/speed.go
index 5c31e13..8919cc2 100644
--- a/decor/speed.go
+++ b/decor/speed.go
@@ -170,7 +170,7 @@
 		}
 	default:
 		return func(speed float64) string {
-			return fmt.Sprintf(format, int64(math.Round(speed)))
+			return fmt.Sprintf(format, speed)
 		}
 	}
 }