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-rw-r--r--src/python/include/Alpha_complex_factory.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/python/include/Alpha_complex_factory.h b/src/python/include/Alpha_complex_factory.h
index 7cab73bd..d7bf3617 100644
--- a/src/python/include/Alpha_complex_factory.h
+++ b/src/python/include/Alpha_complex_factory.h
@@ -32,7 +32,7 @@ namespace Gudhi {
namespace alpha_complex {
template <typename CgalPointType>
-std::vector<double> pt_cgal_to_cython(CgalPointType& point) {
+std::vector<double> pt_cgal_to_cython(CgalPointType const& point) {
std::vector<double> vd;
for (auto coord = point.cartesian_begin(); coord != point.cartesian_end(); coord++)
vd.push_back(CGAL::to_double(*coord));