diff -Naur universe/Building.h universe_boost/Building.h
--- universe/Building.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/Building.h	2016-10-15 18:19:04.475099780 +0200
@@ -69,11 +69,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~Building() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif
 
diff -Naur universe/Field.h universe_boost/Field.h
--- universe/Field.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/Field.h	2016-10-15 18:19:18.370853320 +0200
@@ -48,11 +48,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~Field() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif
 
diff -Naur universe/Fleet.h universe_boost/Fleet.h
--- universe/Fleet.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/Fleet.h	2016-10-15 18:19:43.722403691 +0200
@@ -150,11 +150,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~Fleet() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif
 
diff -Naur universe/Planet.h universe_boost/Planet.h
--- universe/Planet.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/Planet.h	2016-10-15 18:20:02.666067728 +0200
@@ -185,11 +185,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~Planet() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif
 
diff -Naur universe/Ship.h universe_boost/Ship.h
--- universe/Ship.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/Ship.h	2016-10-15 18:20:32.905531458 +0200
@@ -104,11 +104,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~Ship() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif
 
diff -Naur universe/System.h universe_boost/System.h
--- universe/System.h	2016-09-16 15:26:45.000000000 +0200
+++ universe_boost/System.h	2016-10-15 18:20:48.209260072 +0200
@@ -134,11 +134,11 @@
     template <class T> friend void boost::python::detail::value_destroyer<false>::execute(T const volatile* p);
     template <class T> friend void boost::checked_delete(T* x);
 
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 public:
 #endif
     ~System() {}
-#if BOOST_VERSION == 106100
+#if BOOST_VERSION >= 106100
 protected:
 #endif