diff --git a/include/Mesh3D.h b/include/Mesh3D.h
index 2a6946e..c4f4abd 100644
--- a/include/Mesh3D.h
+++ b/include/Mesh3D.h
@@ -13,6 +13,7 @@ namespace djalim {
       Mesh3D(const std::string& filepath);
       std::vector<float> meshVertices;
       int numMeshVertices = 0;
+      int numFaces = 0;
       void loadOBJFile(const std::string& filepath);
       Texture2D texture;
       GLuint VBO;
diff --git a/include/engine.h b/include/engine.h
index 98f351a..0b5918f 100644
--- a/include/engine.h
+++ b/include/engine.h
@@ -6,6 +6,7 @@
 #include "ShaderProgram.h"
 #include "Texture2D.h"
 #include <map>
+#include <memory>
 #include <sstream>
 #include <string>
 #include <vector>
@@ -21,7 +22,7 @@ struct Object3D {
   GLuint VAO;
 };
 
-typedef std::map<std::string,djalim::Mesh3D> Objects3D;
+typedef std::map<std::string,std::unique_ptr<djalim::Mesh3D>> Objects3D;
 
 static bool gWireframe = false;