diff --git a/src/Airports/airport.cxx b/src/Airports/airport.cxx
index 5bfdb18e2..2ba2fd8e9 100644
--- a/src/Airports/airport.cxx
+++ b/src/Airports/airport.cxx
@@ -30,6 +30,7 @@
 
 #include "airport.hxx"
 
+#include <algorithm>
 #include <cassert>
 #include <boost/foreach.hpp>
 
diff --git a/src/Airports/airport.hxx b/src/Airports/airport.hxx
index 2d2ca7138..c715c7232 100644
--- a/src/Airports/airport.hxx
+++ b/src/Airports/airport.hxx
@@ -34,6 +34,7 @@
 #include <map>
 
 #include <Navaids/positioned.hxx>
+#include <Airports/runways.hxx>
 
 // forward decls
 class FGAirportDynamics;