1 files changed, 1 insertions, 0 deletions
diff --git a/src/npf.h b/src/npf.h
index 36a444b4f..5a70b6be0 100644
--- a/src/npf.h
+++ b/src/npf.h
@@ -13,6 +13,7 @@
 #include "tile_type.h"
 #include "track_type.h"
 #include "core/bitmath_func.hpp"
+#include "transport_type.h"
 
 /* mowing grass */
 enum {