diff --git a/src/landscape.h b/src/landscape.h
--- a/src/landscape.h
+++ b/src/landscape.h
@@ -14,8 +14,6 @@
 
 #include "core/geometry_type.hpp"
 #include "tile_cmd.h"
-#include "slope_type.h"
-#include "direction_type.h"
 
 enum {
 	SNOW_LINE_MONTHS = 12, ///< Number of months in the snow line table.