diff -r defc90b7898a -r be1775555bbd src/clear_cmd.cpp
--- a/src/clear_cmd.cpp	Sat Mar 24 14:56:31 2007 +0000
+++ b/src/clear_cmd.cpp	Sat Mar 24 15:19:35 2007 +0000
@@ -668,8 +668,8 @@
 	TileLoopClearHelper(tile);
 
 	switch (_opt.landscape) {
-		case LT_DESERT: TileLoopClearDesert(tile); break;
-		case LT_HILLY:  TileLoopClearAlps(tile);   break;
+		case LT_TROPIC: TileLoopClearDesert(tile); break;
+		case LT_ARCTIC: TileLoopClearAlps(tile);   break;
 	}
 
 	switch (GetClearGround(tile)) {