--- a/net/minecraft/network/login/server/SCustomPayloadLoginPacket.java
+++ b/net/minecraft/network/login/server/SCustomPayloadLoginPacket.java
@@ -8,7 +8,7 @@
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
-public class SCustomPayloadLoginPacket implements IPacket<IClientLoginNetHandler> {
+public class SCustomPayloadLoginPacket implements IPacket<IClientLoginNetHandler>, net.minecraftforge.fml.network.ICustomPacket<SCustomPayloadLoginPacket> {
    private int field_209919_a;
    private ResourceLocation field_209920_b;
    private PacketBuffer field_209921_c;
