diff --git a/08-colors-basic-light/assets/popcorn_model_a.glb b/08-colors-basic-light/assets/popcorn_model_a.glb
index ae67d15..dc02c85 100644
Binary files a/08-colors-basic-light/assets/popcorn_model_a.glb and b/08-colors-basic-light/assets/popcorn_model_a.glb differ
diff --git a/08-colors-basic-light/assets/popcorn_model_a_bad_normals.glb b/08-colors-basic-light/assets/popcorn_model_a_bad_normals.glb
new file mode 100644
index 0000000..ae67d15
Binary files /dev/null and b/08-colors-basic-light/assets/popcorn_model_a_bad_normals.glb differ
diff --git a/08-colors-basic-light/src/main.cpp b/08-colors-basic-light/src/main.cpp
index 62be021..59b3a84 100644
--- a/08-colors-basic-light/src/main.cpp
+++ b/08-colors-basic-light/src/main.cpp
@@ -21,6 +21,7 @@ void processInput(GLFWwindow *window);
 
 const unsigned int SCR_WIDTH = 800;
 const unsigned int SCR_HEIGHT = 600;
+const glm::vec3 POPCORN_SCALE{1.0f, 1.0f, 1.0f};
 
 struct Config {
   Shader shader;
@@ -239,7 +240,7 @@ void render(GLFWwindow* window, Config& config, BoxTest& box, b2World& world) {
 
   model = glm::rotate(model, angle / 5.0f, glm::vec3(1.0f, 0.0f, 0.0f));
   model = glm::rotate(model, glm::radians(time * 10.0f), glm::vec3(0.0f, 1.0f, 1.0f));
-  model = glm::scale(model, glm::vec3(0.5f, 0.5f, 0.5f));	// it's a bit too big for our scene, so scale it down
+  model = glm::scale(model, POPCORN_SCALE);	// it's a bit too big for our scene, so scale it down
   config.shader.setMat4("model", model);
   config.model.Draw(config.shader);