diff --git a/backend/src/tasks/lights.rs b/backend/src/tasks/lights.rs
index 78affce..76a7e8f 100644
--- a/backend/src/tasks/lights.rs
+++ b/backend/src/tasks/lights.rs
@@ -142,13 +142,12 @@ async fn wake_task(
     day: Weekday,
     time: NaiveTime,
 ) {
-    let now = Local::now();
-    let mut alarm = next_alarm(now, day, time);
+    let mut alarm = next_alarm(Local::now(), day, time);
 
     loop {
         info!("sleeping until {alarm}");
-        sleep((alarm - now).to_std().unwrap()).await;
-        alarm += chrono::Duration::weeks(1);
+        sleep((alarm - Local::now()).to_std().unwrap()).await;
+        alarm = next_alarm(Local::now(), day, time);
 
         // slowly turn up brightness of bulb
         for brightness in (1..=75).map(|i| (i as f32) * 0.01) {