1 files changed, 1 insertions, 0 deletions

diff --git a/airport.c b/airport.c
index 4cb84fb5b..1acf08351 100644
--- a/airport.c
+++ b/airport.c
@@ -1,5 +1,6 @@
 #include "stdafx.h"
 #include "ttd.h"
+#include "debug.h"
 #include "map.h"
 #include "airport.h"