diff --git a/primitive_process/interface/subface/simple/cylinder_face.hpp b/primitive_process/interface/subface/simple/cylinder_face.hpp
index 5d86b1f..7376fa3 100644
--- a/primitive_process/interface/subface/simple/cylinder_face.hpp
+++ b/primitive_process/interface/subface/simple/cylinder_face.hpp
@@ -34,7 +34,7 @@ template <>
 struct hasher<internal::cylinder_paired_model_matrix> {
     size_t operator()(const internal::cylinder_paired_model_matrix &block) const
     {
-        const auto& mat = block.data->local_to_world.matrix(); // 3x4
+        const auto& mat = block.data->world_to_local.matrix(); // 3x4
         Eigen::Matrix3d A = mat.block<3,3>(0,0);               
         Eigen::Vector3d b = mat.col(3);