diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -35,6 +35,8 @@
 #include "settings_type.h"
 #include "clear_map.h"
 #include "tree_map.h"
+#include "station_base.h"
+#include "airport.h"
 
 #include "table/sprites.h"
 #include "table/strings.h"