diff --git a/vcg/math/lin_algebra.h b/vcg/math/old_lin_algebra.h
similarity index 100%
rename from vcg/math/lin_algebra.h
rename to vcg/math/old_lin_algebra.h
diff --git a/vcg/math/matrix.h b/vcg/math/old_matrix.h
similarity index 100%
rename from vcg/math/matrix.h
rename to vcg/math/old_matrix.h