diff --git a/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java b/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
index da7f978..dbe3dad 100644
--- a/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
+++ b/src/main/java/vip/fubuki/playersync/config/JdbcConfig.java
@@ -36,7 +36,7 @@ public class JdbcConfig {
         PASSWORD = COMMON_BUILDER.comment("password").define("password", "pleaseChangeThisPassword");
         DATABASE_NAME = COMMON_BUILDER.comment("database name").define("db_name","playersync");
         SERVER_ID = COMMON_BUILDER.comment("the server id should be unique").define("Server_id", new Random().nextInt(1,Integer.MAX_VALUE-1));
-        SYNC_WORLD = COMMON_BUILDER.comment("The worlds that will be synchronized.If running in server it is supposed to have only one").define("sync_world", new ArrayList<>());
+        SYNC_WORLD = COMMON_BUILDER.comment("The worlds that will be synchronized. If running on a server, leave array empty.").define("sync_world", new ArrayList<>());
         SYNC_CHAT= COMMON_BUILDER.comment("Whether synchronize chat").define("sync_chat", true);
         IS_CHAT_SERVER = COMMON_BUILDER.comment("Whether recieve messages from other servers as host").define("IsChatServer",false);
         CHAT_SERVER_IP = COMMON_BUILDER.define("ChatServerIP","127.0.0.1");
diff --git a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
index 1fb44a7..897db93 100644
--- a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
+++ b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
@@ -12,6 +12,7 @@ import net.minecraft.world.effect.MobEffectInstance;
 import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.storage.WorldData;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.event.TickEvent;
 import net.minecraftforge.event.entity.player.PlayerEvent;
@@ -142,7 +143,7 @@ public class VanillaSync {
             // Restore Advancements
             File gameDir = Objects.requireNonNull(serverPlayer.getServer()).getServerDirectory();
             if (Dist.CLIENT.isDedicatedServer()){
-                File advancements = new File(gameDir, JdbcConfig.SYNC_WORLD.get().get(0) + "/advancements" + "/" + player_uuid + ".json");
+                File advancements = new File(gameDir, getSyncWorldForServer() + "/advancements" + "/" + player_uuid + ".json");
                 if (!advancements.exists()) {
                     advancements.createNewFile();
                 }
@@ -319,7 +320,7 @@ public class VanillaSync {
         File advancements = null;
         File gameDir = Objects.requireNonNull(player.getServer()).getServerDirectory();
         if (isServer) {
-            advancements = new File(gameDir, JdbcConfig.SYNC_WORLD.get().get(0) + "/advancements" + "/" + player_uuid + ".json");
+            advancements = new File(gameDir, getSyncWorldForServer() + "/advancements" + "/" + player_uuid + ".json");
         } else {
             File[] files = scanAdvancementsFile(player_uuid, gameDir);
             long latestModifiedDate = 0;
@@ -345,6 +346,25 @@ public class VanillaSync {
         }
     }
 
+    private static String getSyncWorldForServer() {
+        if (!JdbcConfig.SYNC_WORLD.get().isEmpty()) {
+            PlayerSync.LOGGER.warn("Using configuration 'sync_world' on servers is deprecated. Please leave the array empty. Falling back to first entry.");
+            return JdbcConfig.SYNC_WORLD.get().get(0);
+        }
+
+        final MinecraftServer server = ServerLifecycleHooks.getCurrentServer();
+        if (server == null) {
+            PlayerSync.LOGGER.error("Unable to get current server. Assuming default level-name 'world'.");
+            return "world";
+        }
+
+        final WorldData worldData = server.getWorldData();
+        final String levelName = worldData.getLevelName();
+        PlayerSync.LOGGER.debug("Using server level-name: " + levelName);
+
+        return levelName;
+    }
+
     private static File[] scanAdvancementsFile(String player_uuid, File gameDir) {
         File[] files = new File[JdbcConfig.SYNC_WORLD.get().size()];
         for (int i = 0; i < JdbcConfig.SYNC_WORLD.get().size(); i++) {