Just use Streams.toList as that is unmdifiable.

1 files changed, 2 insertions, 2 deletions

diff --git a/config-model-api/src/main/java/com/yahoo/config/application/api/TimeWindow.java b/config-model-api/src/main/java/com/yahoo/config/application/api/TimeWindow.java
index 8256237dc43..1b5c5ce5873 100644
--- a/config-model-api/src/main/java/com/yahoo/config/application/api/TimeWindow.java
+++ b/config-model-api/src/main/java/com/yahoo/config/application/api/TimeWindow.java
@@ -34,8 +34,8 @@ public class TimeWindow {
     private final LocalDateRange dateRange;
 
     private TimeWindow(List<DayOfWeek> days, List<Integer> hours, ZoneId zone, LocalDateRange dateRange) {
-        this.days = Objects.requireNonNull(days).stream().distinct().sorted().collect(Collectors.toUnmodifiableList());
-        this.hours = Objects.requireNonNull(hours).stream().distinct().sorted().collect(Collectors.toUnmodifiableList());
+        this.days = Objects.requireNonNull(days).stream().distinct().sorted().toList();
+        this.hours = Objects.requireNonNull(hours).stream().distinct().sorted().toList();
         this.zone = Objects.requireNonNull(zone);
         this.dateRange = Objects.requireNonNull(dateRange);
         if (days.isEmpty()) throw new IllegalArgumentException("At least one day must be specified");