diff --git a/station_cmd.c b/station_cmd.c
--- a/station_cmd.c
+++ b/station_cmd.c
@@ -32,6 +32,7 @@
 #include "newgrf_callbacks.h"
 #include "newgrf_station.h"
 #include "yapf/yapf.h"
+#include "date.h"
 
 enum {
 	/* Max stations: 64000 (64 * 1000) */