diff --git a/include/cute/atom/copy_traits_xe_2d.hpp b/include/cute/atom/copy_traits_xe_2d.hpp
index 60876df697..cf25b3fe9d 100644
--- a/include/cute/atom/copy_traits_xe_2d.hpp
+++ b/include/cute/atom/copy_traits_xe_2d.hpp
@@ -981,6 +981,7 @@ make_block_2d_copy_CD(CopyOp             const& op,          // Copy operation
                       TiledMMA           const& mma,         // TiledMMA instance
                       Stride<Strides...> const& gstride)     // Global memory strides
 {
+  static_assert(is_xe_block_2d_atom_v<CopyOp>, "Expected a block 2D atom");
   return make_block_2d_copy_CD<ValType>(op, mma, gstride, find_x_mode(gstride), find_y_mode(gstride));
 }