--- libzmf.orig/src/lib/ZMFTypes.cpp	2017-09-17 12:14:41.987990622 +0100
+++ libzmf/src/lib/ZMFTypes.cpp	2017-09-17 12:16:32.636850391 +0100
@@ -38,10 +38,9 @@
 
 double Point::distance(const Point &p2) const
 {
-  return std::hypot(p2.x - x, p2.y - y);
+  return ::hypot(p2.x - x, p2.y - y);
 }
 
-
 BoundingBox::BoundingBox(const std::vector<Point> &points_)
   : m_points(points_)
   , m_width(0.0)