diff --git a/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/api/BallBungeeCordAPI.java b/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/api/BallBungeeCordAPI.java
index fd9fa42..8f88a28 100644
--- a/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/api/BallBungeeCordAPI.java
+++ b/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/api/BallBungeeCordAPI.java
@@ -7,7 +7,7 @@ import cn.hamster3.mc.plugin.ball.common.entity.BallServerType;
 import cn.hamster3.mc.plugin.ball.common.listener.BallDebugListener;
 import cn.hamster3.mc.plugin.core.bungee.HamsterBallPlugin;
 import cn.hamster3.mc.plugin.core.bungee.listener.BallBungeeCordListener;
-import cn.hamster3.mc.plugin.core.bungee.util.BungeeCordUtils;
+import cn.hamster3.mc.plugin.core.bungee.util.CoreBungeeCordUtils;
 import net.md_5.bungee.config.Configuration;
 import org.jetbrains.annotations.NotNull;
 
@@ -28,7 +28,7 @@ public class BallBungeeCordAPI extends BallAPI {
             return;
         }
         HamsterBallPlugin plugin = HamsterBallPlugin.getInstance();
-        Configuration pluginConfig = BungeeCordUtils.getPluginConfig(plugin);
+        Configuration pluginConfig = CoreBungeeCordUtils.getPluginConfig(plugin);
         BallConfig config = new BallConfig(
                 new BallServerInfo(
                         pluginConfig.getString("server-info.id"),
diff --git a/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/util/BallBungeeCordUtils.java b/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/util/BallBungeeCordUtils.java
index 5a839d0..d7c845d 100644
--- a/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/util/BallBungeeCordUtils.java
+++ b/hamster-ball-bungeecord/src/main/java/cn/hamster3/mc/plugin/core/bungee/util/BallBungeeCordUtils.java
@@ -7,6 +7,7 @@ import cn.hamster3.mc.plugin.core.common.api.CoreAPI;
 import cn.hamster3.mc.plugin.core.common.util.CoreUtils;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.connection.Server;
+import org.jetbrains.annotations.NotNull;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -16,7 +17,8 @@ public final class BallBungeeCordUtils {
     private BallBungeeCordUtils() {
     }
 
-    public static BallPlayerInfo getPlayerInfo(ProxiedPlayer player, boolean online) {
+    @NotNull
+    public static BallPlayerInfo getPlayerInfo(@NotNull ProxiedPlayer player, boolean online) {
         Server server = player.getServer();
         return new BallPlayerInfo(
                 player.getUniqueId(),
@@ -27,7 +29,7 @@ public final class BallBungeeCordUtils {
         );
     }
 
-    public static void uploadPlayerInfo(BallPlayerInfo playerInfo) {
+    public static void uploadPlayerInfo(@NotNull BallPlayerInfo playerInfo) {
         CoreUtils.WORKER_EXECUTOR.execute(() -> {
             try (Connection connection = CoreAPI.getInstance().getConnection()) {
                 PreparedStatement statement = connection.prepareStatement("REPLACE INTO `hamster_ball_player_info` VALUES(?, ?, ?, ?, ?);");