diff --git a/server/src/test/java/org/elasticsearch/action/admin/cluster/health/ClusterHealthResponsesTests.java b/server/src/test/java/org/elasticsearch/action/admin/cluster/health/ClusterHealthResponsesTests.java
index fd3a63dd290a1..64f10b9e4bcfa 100644
--- a/server/src/test/java/org/elasticsearch/action/admin/cluster/health/ClusterHealthResponsesTests.java
+++ b/server/src/test/java/org/elasticsearch/action/admin/cluster/health/ClusterHealthResponsesTests.java
@@ -15,6 +15,7 @@
 import org.elasticsearch.cluster.health.ClusterIndexHealthTests;
 import org.elasticsearch.cluster.health.ClusterStateHealth;
 import org.elasticsearch.cluster.metadata.Metadata;
+import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.io.stream.BytesStreamOutput;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.Writeable;
@@ -43,7 +44,7 @@ public class ClusterHealthResponsesTests extends AbstractSerializingTestCase<Clu
     private final ClusterHealthRequest.Level level = randomFrom(ClusterHealthRequest.Level.values());
 
     public void testIsTimeout() {
-        ClusterHealthResponse res = new ClusterHealthResponse("", new String[]{}, ClusterState.EMPTY_STATE, false);
+        ClusterHealthResponse res = new ClusterHealthResponse("", Strings.EMPTY_ARRAY, ClusterState.EMPTY_STATE, false);
         for (int i = 0; i < 5; i++) {
             res.setTimedOut(randomBoolean());
             if (res.isTimedOut()) {
@@ -56,7 +57,7 @@ public void testIsTimeout() {
     }
 
     public void testTimeoutReturns200IfOptedIn() {
-        ClusterHealthResponse res = new ClusterHealthResponse("", new String[]{}, ClusterState.EMPTY_STATE, true);
+        ClusterHealthResponse res = new ClusterHealthResponse("", Strings.EMPTY_ARRAY, ClusterState.EMPTY_STATE, true);
         for (int i = 0; i < 5; i++) {
             res.setTimedOut(randomBoolean());
             assertEquals(RestStatus.OK, res.status());
diff --git a/x-pack/plugin/transform/src/test/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndexTests.java b/x-pack/plugin/transform/src/test/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndexTests.java
index efdf432bb5d66..e6c0b9cf5bc05 100644
--- a/x-pack/plugin/transform/src/test/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndexTests.java
+++ b/x-pack/plugin/transform/src/test/java/org/elasticsearch/xpack/transform/persistence/TransformInternalIndexTests.java
@@ -173,7 +173,7 @@ public void testCreateLatestVersionedIndexIfRequired_GivenShardInitializationPen
         doAnswer(invocationOnMock -> {
             @SuppressWarnings("unchecked")
             ActionListener<ClusterHealthResponse> listener = (ActionListener<ClusterHealthResponse>) invocationOnMock.getArguments()[1];
-            listener.onResponse(new ClusterHealthResponse("", new String[]{}, ClusterState.EMPTY_STATE, false));
+            listener.onResponse(new ClusterHealthResponse("", Strings.EMPTY_ARRAY, ClusterState.EMPTY_STATE, false));
             return null;
         }).when(clusterClient).health(any(), any());
 
@@ -257,7 +257,7 @@ public void testCreateLatestVersionedIndexIfRequired_GivenConcurrentCreationShar
         doAnswer(invocationOnMock -> {
             @SuppressWarnings("unchecked")
             ActionListener<ClusterHealthResponse> listener = (ActionListener<ClusterHealthResponse>) invocationOnMock.getArguments()[1];
-            listener.onResponse(new ClusterHealthResponse("", new String[]{}, ClusterState.EMPTY_STATE, false));
+            listener.onResponse(new ClusterHealthResponse("", Strings.EMPTY_ARRAY, ClusterState.EMPTY_STATE, false));
             return null;
         }).when(clusterClient).health(any(), any());