--- a/src/airport.cpp	Tue Dec 25 01:29:54 2007 +0000
+++ b/src/airport.cpp	Tue Dec 25 09:48:53 2007 +0000
@@ -11,6 +11,7 @@
 #include "airport_movement.h"
 #include "date.h"
 #include "core/bitmath_func.hpp"
+#include "core/alloc_func.hpp"
 
 /* Uncomment this to print out a full report of the airport-structure
  * You should either use