diff --git a/src/logic/scripting/lua/libs/libworld.cpp b/src/logic/scripting/lua/libs/libworld.cpp
index 5d9368420..bbba422df 100644
--- a/src/logic/scripting/lua/libs/libworld.cpp
+++ b/src/logic/scripting/lua/libs/libworld.cpp
@@ -160,13 +160,13 @@ static void integrate_chunk_client(Chunk& chunk) {
 static int l_set_chunk_data(lua::State* L) {
     int x = static_cast<int>(lua::tointeger(L, 1));
     int z = static_cast<int>(lua::tointeger(L, 2));
-    auto buffer = lua::touserdata<lua::LuaBytearray>(L, 3);
+    auto buffer = lua::require_bytearray(L, 3);
     auto chunk = level->chunks->getChunk(x, z);
     if (chunk == nullptr) {
-        return 0;
+        return lua::pushboolean(L, false);
     }
     compressed_chunks::decode(
-        *chunk, buffer->data().data(), buffer->data().size()
+        *chunk, buffer.data(), buffer.size()
     );
     if (controller->getChunksController()->lighting == nullptr) {
         return lua::pushboolean(L, true);
diff --git a/src/logic/scripting/lua/lua_util.cpp b/src/logic/scripting/lua/lua_util.cpp
index d008cf458..23d13d7f7 100644
--- a/src/logic/scripting/lua/lua_util.cpp
+++ b/src/logic/scripting/lua/lua_util.cpp
@@ -133,6 +133,13 @@ dv::value lua::tovalue(State* L, int idx) {
                 return map;
             }
         }
+        case LUA_TUSERDATA: {
+            if (auto bytes = touserdata<LuaBytearray>(L, idx)) {
+                const auto& data = bytes->data();
+                return std::make_shared<dv::objects::Bytes>(data.data(), data.size());
+            }
+            [[fallthrough]];
+        }
         default:
             throw std::runtime_error(
                 "lua type " + std::string(lua_typename(L, type)) +