diff --git a/src/mc/world/level/block/states/BlockStateVariant.h b/src/mc/world/level/block/states/BlockStateVariant.h
index c2555a3b3b..a9b68cf1a1 100644
--- a/src/mc/world/level/block/states/BlockStateVariant.h
+++ b/src/mc/world/level/block/states/BlockStateVariant.h
@@ -6,16 +6,18 @@
 template <typename T0>
 class BlockStateVariant : public ::BlockState {
 public:
-    // prevent constructor by default
-    BlockStateVariant& operator=(BlockStateVariant const&);
-    BlockStateVariant(BlockStateVariant const&);
-    BlockStateVariant();
+    using Type = T0;
 
+public:
+    // virtual functions
     // NOLINTBEGIN
-    virtual ~BlockStateVariant();
+    // vIndex: 0
+    virtual ~BlockStateVariant() /*override*/ = default;
 
-    virtual void toNBT(class CompoundTag&, int) const;
+    // vIndex: 1
+    virtual void toNBT(::CompoundTag&, int) const /*override*/;
 
-    virtual bool fromNBT(class CompoundTag const&, int&) const;
+    // vIndex: 2
+    virtual bool fromNBT(::CompoundTag const&, int&) const /*override*/;
     // NOLINTEND
 };
diff --git a/src/mc/world/level/block/states/BuiltInBlockStateVariant.h b/src/mc/world/level/block/states/BuiltInBlockStateVariant.h
index 207391ccd4..0accb29817 100644
--- a/src/mc/world/level/block/states/BuiltInBlockStateVariant.h
+++ b/src/mc/world/level/block/states/BuiltInBlockStateVariant.h
@@ -1,12 +1,14 @@
 #pragma once
 
 #include "mc/_HeaderOutputPredefine.h"
+#include "mc/world/level/block/states/BlockStateVariant.h"
 
 template <typename T0>
-class BuiltInBlockStateVariant {
+class BuiltInBlockStateVariant : public ::BlockStateVariant<T0> {
 public:
-    // prevent constructor by default
-    BuiltInBlockStateVariant& operator=(BuiltInBlockStateVariant const&);
-    BuiltInBlockStateVariant(BuiltInBlockStateVariant const&);
-    BuiltInBlockStateVariant();
+    // virtual functions
+    // NOLINTBEGIN
+    // vIndex: 0
+    virtual ~BuiltInBlockStateVariant() /*override*/ = default;
+    // NOLINTEND
 };