diff --git a/src/main/java/se/urmo/electricityalert/alert/AlertService.java b/src/main/java/se/urmo/electricityalert/alert/AlertService.java
index 99bdde3..cc9962a 100644
--- a/src/main/java/se/urmo/electricityalert/alert/AlertService.java
+++ b/src/main/java/se/urmo/electricityalert/alert/AlertService.java
@@ -12,6 +12,7 @@ import se.urmo.electricityalert.store.InMemoryPriceStore;
 
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
+import java.time.temporal.ChronoUnit;
 
 @Slf4j
 @Service
@@ -31,7 +32,9 @@ public class AlertService {
     // Check every 5 minutes
     @Scheduled(fixedRate = 300_000)
     public void checkPrices() {
-        LocalDateTime oneHourLater = LocalDateTime.now().withMinute(0).withSecond(0).plusHours(1);
+        LocalDateTime oneHourLater = LocalDateTime.now()
+                .truncatedTo(ChronoUnit.HOURS)
+                .plusHours(1);
         ElectricityPrice price = store.get(oneHourLater);
         log.debug("Checking price at {} ({})", oneHourLater, price);
         if (price != null && price.price().compareTo(threshold) < 0 && !store.alreadyNotified(oneHourLater)) {