--- a/net/minecraft/potion/Potion.java
+++ b/net/minecraft/potion/Potion.java
@@ -6,7 +6,7 @@
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.registry.Registry;
 
-public class Potion {
+public class Potion extends net.minecraftforge.registries.ForgeRegistryEntry<Potion> {
    private final String field_185179_d;
    private final ImmutableList<EffectInstance> field_185180_e;
 
