diff --git a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsPlugin.java b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsPlugin.java
index f09b69aac48..32d787442a9 100644
--- a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsPlugin.java
+++ b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsPlugin.java
@@ -31,7 +31,7 @@ import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.repositories.RepositoriesModule;
 
 // Code 
-public class HdfsPlugin extends Plugin {
+public final class HdfsPlugin extends Plugin {
   
     // initialize some problematic classes with elevated privileges
     static {
diff --git a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsRepository.java b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsRepository.java
index c4b608dc82a..24f3a248264 100644
--- a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsRepository.java
+++ b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/HdfsRepository.java
@@ -50,7 +50,7 @@ import org.elasticsearch.repositories.RepositoryName;
 import org.elasticsearch.repositories.RepositorySettings;
 import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
 
-public class HdfsRepository extends BlobStoreRepository implements FileContextFactory {
+public final class HdfsRepository extends BlobStoreRepository implements FileContextFactory {
 
     public final static String TYPE = "hdfs";
 
diff --git a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/SecurityUtils.java b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/SecurityUtils.java
index c86842baf32..59cbba8aff0 100644
--- a/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/SecurityUtils.java
+++ b/plugins/repository-hdfs/src/main/java/org/elasticsearch/repositories/hdfs/SecurityUtils.java
@@ -28,7 +28,7 @@ import java.security.AccessController;
 import java.security.PrivilegedActionException;
 import java.security.PrivilegedExceptionAction;
 
-class SecurityUtils {
+final class SecurityUtils {
 
     static <V> V execute(FileContextFactory fcf, FcCallback<V> callback) throws IOException {
         return execute(fcf.getFileContext(), callback);