diff --git a/main.go b/main.go
index 32b2604..5bd83f2 100644
--- a/main.go
+++ b/main.go
@@ -52,7 +52,9 @@ func (r route) Downtime(now time.Time) float64 {
 }
 
 func (r route) Noise(now time.Time) bool {
-	return r.Counter <= uint(now.Sub(startTime).Hours())+10 && r.Downtime(now) < 0.5
+	return r.UnreachableSince.IsZero() &&
+		r.Counter <= uint(now.Sub(startTime).Hours())+10 &&
+		r.Downtime(now) < 0.5
 }
 
 func (r route) String() string {