diff --git a/decor/speed.go b/decor/speed.go
index 561fcb9..84ace37 100644
--- a/decor/speed.go
+++ b/decor/speed.go
@@ -171,7 +171,7 @@
 		}
 	default:
 		return func(speed float64) string {
-			return fmt.Sprintf(format, speed)
+			return fmt.Sprintf(format, int64(math.Round(speed)))
 		}
 	}
 }