diff --git a/include/omath/collision/simplex.hpp b/include/omath/collision/simplex.hpp
index 798e1f0..e585508 100644
--- a/include/omath/collision/simplex.hpp
+++ b/include/omath/collision/simplex.hpp
@@ -9,7 +9,7 @@
 namespace omath::collision
 {
     template<class VectorType = Vector3<float>>
-    class Simplex
+    class Simplex final
     {
         std::array<VectorType, 4> m_points;
         std::size_t m_size;