diff --git a/include/deal.II/numerics/rtree.h b/include/deal.II/numerics/rtree.h
index 1b9d04d..1e1bfd2 100644
--- a/include/deal.II/numerics/rtree.h
+++ b/include/deal.II/numerics/rtree.h
@@ -26,6 +26,7 @@
 #include <deal.II/boost_adaptors/segment.h>
 
 DEAL_II_DISABLE_EXTRA_DIAGNOSTICS
+#include <boost/geometry/algorithms/distance.hpp>
 #include <boost/geometry/index/rtree.hpp>
 #include <boost/geometry/strategies/strategies.hpp>
 DEAL_II_ENABLE_EXTRA_DIAGNOSTICS