diff --git a/Point_set_shape_detection_3/include/CGAL/Shape_detection_3/Efficient_RANSAC_traits.h b/Point_set_shape_detection_3/include/CGAL/Shape_detection_3/Efficient_RANSAC_traits.h
index 67404dd315a..f73bf8b47b8 100644
--- a/Point_set_shape_detection_3/include/CGAL/Shape_detection_3/Efficient_RANSAC_traits.h
+++ b/Point_set_shape_detection_3/include/CGAL/Shape_detection_3/Efficient_RANSAC_traits.h
@@ -69,6 +69,12 @@ namespace CGAL {
     typedef InputNormalMap Normal_map;
     ///
     typedef CGAL::Search_traits_3<Gt> Search_traits;
+    ///
+    Efficient_RANSAC_traits(const Gt& gt =  Gt())
+      : m_gt(gt) {}
+
+  private:
+    Gt m_gt;
   };
 
 } } // end of namespace CGAL::Shape_detection_3