diff --git a/engine/include/engine/engine.h b/engine/include/engine/engine.h
index 99e9e9e..b5ca99e 100644
--- a/engine/include/engine/engine.h
+++ b/engine/include/engine/engine.h
@@ -1,10 +1,12 @@
-#ifndef WIN32
+#pragma once
+
+#ifndef _WIN32
 #define GLEW_STATIC
 #endif
 
 #include <memory>
 
-#ifdef WIN32
+#ifdef _WIN32
 #include <corecrt_math_defines.h>
 #endif
 
diff --git a/sandbox/src/main.cpp b/sandbox/src/main.cpp
index d9b2027..8caf6cc 100644
--- a/sandbox/src/main.cpp
+++ b/sandbox/src/main.cpp
@@ -35,18 +35,18 @@ public:
         m_registry.emplace<transform>(cameraEntity, glm::vec3(0.f, 2.f, 2.f));
         m_registry.emplace<camera>(cameraEntity);
 
-        Object* targetObj = Object::LoadFile("./assets/wizard/wizard.obj");
+        Object* targetObj = Object::LoadFile("./assets/monkey.obj");
         const auto targetEntity = m_registry.create();
         m_registry.emplace<transform>(targetEntity, glm::vec3(0.f, 0.0f, 0.f));
         m_registry.emplace<mesh>(targetEntity, std::shared_ptr<Object>(targetObj));
 
-        Object* grass = Object::LoadFile("./assets/grass_block/grass_block.obj");
+        Object* grass = Object::LoadFile("./assets/cube.obj");
         const auto cubeEntity = m_registry.create();
         m_registry.emplace<transform>(cubeEntity, glm::vec3(-1.5f, 0.4f, 0.f));
         m_registry.emplace<mesh>(cubeEntity, std::shared_ptr<Object>(grass));
 
         // Cube template (use shared object to avoid reloading 1000 times)
-        std::shared_ptr<Object> cubeObj = std::shared_ptr<Object>(Object::LoadFile("./assets/grass_block/grass_block.obj"));
+        std::shared_ptr<Object> cubeObj = std::shared_ptr<Object>(Object::LoadFile("./assets/cube.obj"));
         const auto batchEntt = m_registry.create();
         m_registry.emplace<batch>(batchEntt);
         m_registry.emplace<mesh>(batchEntt, cubeObj);