--- a/src/tree_map.h	Thu Jan 11 13:41:16 2007 +0000
+++ b/src/tree_map.h	Mon Jan 15 20:14:06 2007 +0000
@@ -35,14 +35,14 @@
 static inline TreeType GetTreeType(TileIndex t)
 {
 	assert(IsTileType(t, MP_TREES));
-	return _m[t].m3;
+	return (TreeType)_m[t].m3;
 }
 
 
 static inline TreeGround GetTreeGround(TileIndex t)
 {
 	assert(IsTileType(t, MP_TREES));
-	return GB(_m[t].m2, 4, 2);
+	return (TreeGround)GB(_m[t].m2, 4, 2);
 }