diff --git a/src/yapf/yapf.h b/src/yapf/yapf.h
--- a/src/yapf/yapf.h
+++ b/src/yapf/yapf.h
@@ -7,6 +7,7 @@
 
 #include "../debug.h"
 #include "../depot_type.h"
+#include "../direction_type.h"
 
 /** Finds the best path for given ship.
  * @param v        the ship that needs to find a path