diff --git a/src/main/java/net/minestom/server/instance/batch/ChunkBatch.java b/src/main/java/net/minestom/server/instance/batch/ChunkBatch.java
index 5aca97746..8e0e47a8e 100644
--- a/src/main/java/net/minestom/server/instance/batch/ChunkBatch.java
+++ b/src/main/java/net/minestom/server/instance/batch/ChunkBatch.java
@@ -83,6 +83,7 @@ public class ChunkBatch implements InstanceBatch {
 
     /**
      * Execute the batch in the dedicated pool and run the callback during the next instance update when blocks are placed
+     * (which means that the callback can be called 50ms after, and in a determinable thread)
      *
      * @param callback the callback to execute once the blocks are placed
      */
@@ -93,7 +94,7 @@ public class ChunkBatch implements InstanceBatch {
     }
 
     /**
-     * Execute the batch in the dedicated pool and run the callback once blocks are placed (in the current thread)
+     * Execute the batch in the dedicated pool and run the callback once blocks are placed (in the block batch pool)
      *
      * @param callback the callback to execute once the blocks are placed
      */
diff --git a/src/main/java/net/minestom/server/network/packet/client/handshake/HandshakePacket.java b/src/main/java/net/minestom/server/network/packet/client/handshake/HandshakePacket.java
index b05ebe2b8..288e09436 100644
--- a/src/main/java/net/minestom/server/network/packet/client/handshake/HandshakePacket.java
+++ b/src/main/java/net/minestom/server/network/packet/client/handshake/HandshakePacket.java
@@ -11,6 +11,11 @@ import net.minestom.server.utils.binary.BinaryReader;
 
 public class HandshakePacket implements ClientPreplayPacket {
 
+    /**
+     * Text sent if a player tries to connect with an invalid version of the client
+     */
+    private static final ColoredText INVALID_VERSION_TEXT = ColoredText.of(ChatColor.RED, "Invalid Version, please use " + MinecraftServer.VERSION_NAME);
+
     private int protocolVersion;
     private String serverAddress;
     private int serverPort;
@@ -33,7 +38,7 @@ public class HandshakePacket implements ClientPreplayPacket {
             case 2:
                 connection.setConnectionState(ConnectionState.LOGIN);
                 if (protocolVersion != MinecraftServer.PROTOCOL_VERSION) {
-                    connection.sendPacket(new LoginDisconnect(ColoredText.of(ChatColor.RED, "Invalid Version").toString()));
+                    connection.sendPacket(new LoginDisconnect(INVALID_VERSION_TEXT.toString()));
                     connection.disconnect();
                 }
                 break;
diff --git a/src/main/java/net/minestom/server/network/packet/server/login/LoginDisconnect.java b/src/main/java/net/minestom/server/network/packet/server/login/LoginDisconnect.java
index 7b9e1d29d..9d5a99f9c 100644
--- a/src/main/java/net/minestom/server/network/packet/server/login/LoginDisconnect.java
+++ b/src/main/java/net/minestom/server/network/packet/server/login/LoginDisconnect.java
@@ -4,20 +4,21 @@ import net.minestom.server.network.packet.server.ServerPacket;
 import net.minestom.server.utils.binary.BinaryWriter;
 
 public class LoginDisconnect implements ServerPacket {
-	private String kickMessage;
 
-	public LoginDisconnect(String kickMessage) {
-		this.kickMessage = kickMessage;
-	}
+    private String kickMessage;
 
-	@Override
-	public void write(BinaryWriter writer) {
-		writer.writeSizedString(kickMessage);
-	}
+    public LoginDisconnect(String kickMessage) {
+        this.kickMessage = kickMessage;
+    }
 
-	@Override
-	public int getId() {
-		return 0x00;
-	}
+    @Override
+    public void write(BinaryWriter writer) {
+        writer.writeSizedString(kickMessage);
+    }
+
+    @Override
+    public int getId() {
+        return 0x00;
+    }
 
 }