diff --git a/hazelcast-client/src/main/java/com/hazelcast/client/impl/HazelcastClientInstanceImpl.java b/hazelcast-client/src/main/java/com/hazelcast/client/impl/HazelcastClientInstanceImpl.java
index <HASH>..<HASH> 100644
--- a/hazelcast-client/src/main/java/com/hazelcast/client/impl/HazelcastClientInstanceImpl.java
+++ b/hazelcast-client/src/main/java/com/hazelcast/client/impl/HazelcastClientInstanceImpl.java
@@ -408,6 +408,7 @@ public class HazelcastClientInstanceImpl implements HazelcastInstance, Serializa
         return getDistributedObject(XAService.SERVICE_NAME, XAService.SERVICE_NAME);
     }
 
+    @Override
     public Config getConfig() {
         throw new UnsupportedOperationException("Client cannot access cluster config!");
     }
@@ -502,6 +503,7 @@ public class HazelcastClientInstanceImpl implements HazelcastInstance, Serializa
         return getDistributedObject(DistributedDurableExecutorService.SERVICE_NAME, name);
     }
 
+    @Override
     public <T> T executeTransaction(TransactionalTask<T> task) throws TransactionException {
         return transactionManager.executeTransaction(task);
     }
@@ -623,6 +625,7 @@ public class HazelcastClientInstanceImpl implements HazelcastInstance, Serializa
         return config;
     }
 
+    @Override
     public SerializationService getSerializationService() {
         return serializationService;
     }
Added missing @Override annotations in HazelcastClientInstanceImpl.