diff --git a/src/main/java/emu/grasscutter/server/game/GameSessionManager.java b/src/main/java/emu/grasscutter/server/game/GameSessionManager.java
index 26146b81f..fde9317fd 100644
--- a/src/main/java/emu/grasscutter/server/game/GameSessionManager.java
+++ b/src/main/java/emu/grasscutter/server/game/GameSessionManager.java
@@ -5,11 +5,12 @@ import emu.grasscutter.utils.Utils;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.DefaultEventLoop;
-import java.net.InetSocketAddress;
-import java.util.concurrent.ConcurrentHashMap;
 import kcp.highway.KcpListener;
 import kcp.highway.Ukcp;
 
+import java.net.InetSocketAddress;
+import java.util.concurrent.ConcurrentHashMap;
+
 public class GameSessionManager {
     private static final DefaultEventLoop logicThread = new DefaultEventLoop();
     private static final ConcurrentHashMap<Ukcp, GameSession> sessions = new ConcurrentHashMap<>();
@@ -95,7 +96,7 @@ public class GameSessionManager {
         return listener;
     }
 
-    interface KcpTunnel {
+    public interface KcpTunnel {
         InetSocketAddress getAddress();
 
         void writeData(byte[] bytes);