diff --git a/tunnel-server/src/main/java/com/alibaba/arthas/tunnel/server/RelayHandler.java b/tunnel-server/src/main/java/com/alibaba/arthas/tunnel/server/RelayHandler.java
index 77071141c..39d48e0a5 100644
--- a/tunnel-server/src/main/java/com/alibaba/arthas/tunnel/server/RelayHandler.java
+++ b/tunnel-server/src/main/java/com/alibaba/arthas/tunnel/server/RelayHandler.java
@@ -37,9 +37,7 @@ public final class RelayHandler extends ChannelInboundHandlerAdapter {
     @Override
     public void channelInactive(ChannelHandlerContext ctx) {
         if (relayChannel.isActive()) {
-            if (relayChannel.isActive()) {
-                relayChannel.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
-            }
+            relayChannel.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
         }
     }