diff --git a/src/slic3r/GUI/Selection.cpp b/src/slic3r/GUI/Selection.cpp
index 29102d64d3..8ff3ab4b18 100644
--- a/src/slic3r/GUI/Selection.cpp
+++ b/src/slic3r/GUI/Selection.cpp
@@ -923,7 +923,6 @@ const std::pair<Vec3d, double> Selection::get_bounding_sphere() const
         using Traits = CGAL::Min_sphere_of_points_d_traits_3<K, float>;
         using Min_sphere = CGAL::Min_sphere_of_spheres_d<Traits>;
         using Point = K::Point_3;
-        using Sphere = Traits::Sphere;
 
         std::vector<Point> points;
         if (m_valid) {