Assign copied list

1 files changed, 1 insertions, 1 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/notification/Notification.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/notification/Notification.java
index f28b21228d9..897e0be2d22 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/notification/Notification.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/notification/Notification.java
@@ -37,7 +37,7 @@ public record Notification(Instant at, Notification.Type type, Notification.Leve
         Objects.requireNonNull(level, "level cannot be null");
         Objects.requireNonNull(source, "source cannot be null");
         Objects.requireNonNull(title, "title cannot be null");
-        List.copyOf(Objects.requireNonNull(messages, "messages cannot be null"));
+        messages = List.copyOf(Objects.requireNonNull(messages, "messages cannot be null"));
 
         // Allowing empty title temporarily until all notifications have a title
         // if (title.isBlank()) throw new IllegalArgumentException("title cannot be empty");