diff --git a/src/newgrf_airporttiles.cpp b/src/newgrf_airporttiles.cpp
--- a/src/newgrf_airporttiles.cpp
+++ b/src/newgrf_airporttiles.cpp
@@ -26,6 +26,7 @@
 #include "variables.h"
 #include "functions.h"
 #include "core/random_func.hpp"
+#include "table/strings.h"
 #include "table/airporttiles.h"