diff --git a/src/libslic3r/Point.hpp b/src/libslic3r/Point.hpp
index f96dd801a..dbf3c3832 100644
--- a/src/libslic3r/Point.hpp
+++ b/src/libslic3r/Point.hpp
@@ -540,6 +540,7 @@ namespace boost { namespace polygon {
 } }
 // end Boost
 
+#include <cereal/cereal.hpp>
 // Serialization through the Cereal library
 namespace cereal {
 //	template<class Archive> void serialize(Archive& archive, Slic3r::Vec2crd &v) { archive(v.x(), v.y()); }
@@ -554,16 +555,10 @@ namespace cereal {
 	template<class Archive> void serialize(Archive& archive, Slic3r::Vec3d   &v) { archive(v.x(), v.y(), v.z()); }
 
     template<class Archive> void serialize(Archive& archive, Slic3r::Matrix4d &m){ archive(binary_data(m.data(), 4*4*sizeof(double))); }
-	template<class Archive> void load(Archive& archive, Slic3r::Matrix2f &m) { archive.loadBinary((char*)m.data(), sizeof(float) * 4); }
-	template<class Archive> void save(Archive& archive, Slic3r::Matrix2f &m) { archive.saveBinary((char*)m.data(), sizeof(float) * 4); }
+    template<class Archive> void serialize(Archive& archive, Slic3r::Matrix2f &m){ archive(binary_data(m.data(), 2*2*sizeof(float))); }
         
     // Eigen Transformation serialization
     template<class Archive, class T, int N> inline void serialize(Archive& archive, Eigen::Transform<T, N, Eigen::Affine, Eigen::DontAlign>& t){ archive(t.matrix()); }
-
-#if ENABLE_WORLD_COORDINATE
-    //template<class Archive> void load(Archive& archive, Slic3r::Transform3d& m)       { archive.loadBinary((char*)m.data(), sizeof(double) * 16); }
-    //template<class Archive> void save(Archive& archive, const Slic3r::Transform3d& m) { archive.saveBinary((char*)m.data(), sizeof(double) * 16); }
-#endif // ENABLE_WORLD_COORDINATE
 }
 
 // To be able to use Vec<> and Mat<> in range based for loops: