diff --git a/src/main/java/com/alibaba/druid/pool/xa/ManagedConnection.java b/src/main/java/com/alibaba/druid/pool/xa/ManagedConnection.java
index 7d3cd362d8..dd170b5a5d 100644
--- a/src/main/java/com/alibaba/druid/pool/xa/ManagedConnection.java
+++ b/src/main/java/com/alibaba/druid/pool/xa/ManagedConnection.java
@@ -36,6 +36,7 @@ import com.alibaba.druid.pool.PoolableConnection;
  * @author Dain Sundstrom
  * @version $Revision$
  */
+@SuppressWarnings("unused")
 public class ManagedConnection extends PoolableConnection {
 
     private final TransactionRegistry transactionRegistry;