diff --git a/src/crown_gear.rs b/src/crown_gear.rs
index 137ec1a..42333dd 100644
--- a/src/crown_gear.rs
+++ b/src/crown_gear.rs
@@ -49,7 +49,7 @@ pub fn make_mesh_smooth(
 
 		let vertex = |x, z, n| Vertex {
 			position: rot * vec3(x, 0.0, z),
-			normal: n,
+			normal: rot * n,
 		};
 		mesh.vertices.extend([
 			// top