Avoid platform-specific error message in test

1 files changed, 1 insertions, 1 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/deployment/DeploymentStatus.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/deployment/DeploymentStatus.java
index 8d983714be4..71e781ed5ed 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/deployment/DeploymentStatus.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/deployment/DeploymentStatus.java
@@ -77,7 +77,7 @@ import static java.util.stream.Collectors.toUnmodifiableList;
 public class DeploymentStatus {
 
     private static <T> List<T> union(List<T> first, List<T> second) {
-        return Stream.concat(first.stream(), second.stream()).distinct().collect(toUnmodifiableList());
+        return Stream.concat(first.stream(), second.stream()).distinct().toList();
     }
 
     private final Application application;