diff --git a/server/src/test/java/org/elasticsearch/transport/RemoteClusterServiceTests.java b/server/src/test/java/org/elasticsearch/transport/RemoteClusterServiceTests.java
index afc915edab0eb..766e0d780531b 100644
--- a/server/src/test/java/org/elasticsearch/transport/RemoteClusterServiceTests.java
+++ b/server/src/test/java/org/elasticsearch/transport/RemoteClusterServiceTests.java
@@ -741,7 +741,7 @@ public void testCollectSearchShards() throws Exception {
                         AtomicReference<Exception> failure = new AtomicReference<>();
                         remoteClusterService.collectSearchShards(IndicesOptions.lenientExpandOpen(), null, null, remoteIndicesByCluster,
                                 new LatchedActionListener<>(ActionListener.wrap(response::set, failure::set), latch));
-                        assertTrue(latch.await(1, TimeUnit.SECONDS));
+                        assertTrue(latch.await(5, TimeUnit.SECONDS));
                         assertNull(failure.get());
                         assertNotNull(response.get());
                         Map<String, ClusterSearchShardsResponse> map = response.get();
@@ -760,7 +760,7 @@ public void testCollectSearchShards() throws Exception {
                         remoteClusterService.collectSearchShards(IndicesOptions.lenientExpandOpen(), "index_not_found",
                                 null, remoteIndicesByCluster,
                                 new LatchedActionListener<>(ActionListener.wrap(response::set, failure::set), latch));
-                        assertTrue(latch.await(2, TimeUnit.SECONDS));
+                        assertTrue(latch.await(5, TimeUnit.SECONDS));
                         assertNull(response.get());
                         assertNotNull(failure.get());
                         assertThat(failure.get(), instanceOf(RemoteTransportException.class));
@@ -799,7 +799,7 @@ public void onNodeDisconnected(DiscoveryNode node) {
                         AtomicReference<Exception> failure = new AtomicReference<>();
                         remoteClusterService.collectSearchShards(IndicesOptions.lenientExpandOpen(), null, null, remoteIndicesByCluster,
                                 new LatchedActionListener<>(ActionListener.wrap(response::set, failure::set), latch));
-                        assertTrue(latch.await(1, TimeUnit.SECONDS));
+                        assertTrue(latch.await(5, TimeUnit.SECONDS));
                         assertNull(response.get());
                         assertNotNull(failure.get());
                         assertThat(failure.get(), instanceOf(RemoteTransportException.class));
@@ -817,7 +817,7 @@ public void onNodeDisconnected(DiscoveryNode node) {
                         AtomicReference<Exception> failure = new AtomicReference<>();
                         remoteClusterService.collectSearchShards(IndicesOptions.lenientExpandOpen(), null, null, remoteIndicesByCluster,
                                 new LatchedActionListener<>(ActionListener.wrap(response::set, failure::set), latch));
-                        assertTrue(latch.await(1, TimeUnit.SECONDS));
+                        assertTrue(latch.await(5, TimeUnit.SECONDS));
                         assertNull(failure.get());
                         assertNotNull(response.get());
                         Map<String, ClusterSearchShardsResponse> map = response.get();
@@ -836,7 +836,7 @@ public void onNodeDisconnected(DiscoveryNode node) {
 
                     //give transport service enough time to realize that the node is down, and to notify the connection listeners
                     //so that RemoteClusterConnection is left with no connected nodes, hence it will retry connecting next
-                    assertTrue(disconnectedLatch.await(1, TimeUnit.SECONDS));
+                    assertTrue(disconnectedLatch.await(5, TimeUnit.SECONDS));
 
                     service.clearAllRules();
                     if (randomBoolean()) {
@@ -853,7 +853,7 @@ public void onNodeDisconnected(DiscoveryNode node) {
                         AtomicReference<Exception> failure = new AtomicReference<>();
                         remoteClusterService.collectSearchShards(IndicesOptions.lenientExpandOpen(), null, null, remoteIndicesByCluster,
                                 new LatchedActionListener<>(ActionListener.wrap(response::set, failure::set), latch));
-                        assertTrue(latch.await(1, TimeUnit.SECONDS));
+                        assertTrue(latch.await(5, TimeUnit.SECONDS));
                         assertNull(failure.get());
                         assertNotNull(response.get());
                         Map<String, ClusterSearchShardsResponse> map = response.get();
@@ -862,7 +862,7 @@ public void onNodeDisconnected(DiscoveryNode node) {
                             String clusterAlias = "remote" + i;
                             assertTrue(map.containsKey(clusterAlias));
                             ClusterSearchShardsResponse shardsResponse = map.get(clusterAlias);
-                            assertTrue(shardsResponse != ClusterSearchShardsResponse.EMPTY);
+                            assertNotSame(ClusterSearchShardsResponse.EMPTY, shardsResponse);
                         }
                     }
                     assertEquals(0, service.getConnectionManager().size());