--- a/net/minecraft/network/login/client/CCustomPayloadLoginPacket.java
+++ b/net/minecraft/network/login/client/CCustomPayloadLoginPacket.java
@@ -8,7 +8,7 @@
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
-public class CCustomPayloadLoginPacket implements IPacket<IServerLoginNetHandler> {
+public class CCustomPayloadLoginPacket implements IPacket<IServerLoginNetHandler>, net.minecraftforge.fml.network.ICustomPacket<CCustomPayloadLoginPacket> {
    private int field_209922_a;
    private PacketBuffer field_209923_b;
 
