diff -r 123a3a88b9c2 -r e61af9d8a2b3 src/clear_cmd.cpp
--- a/src/clear_cmd.cpp	Tue Jul 24 12:29:47 2007 +0000
+++ b/src/clear_cmd.cpp	Tue Jul 24 13:03:24 2007 +0000
@@ -758,7 +758,7 @@
 				SetClearGroundDensity(tile, CLEAR_ROCKS, 3);
 				do {
 					if (--j == 0) goto get_out;
-					tile_new = tile + TileOffsByDiagDir(GB(Random(), 0, 2));
+					tile_new = tile + TileOffsByDiagDir((DiagDirection)GB(Random(), 0, 2));
 				} while (!IsTileType(tile_new, MP_CLEAR) || IsClearGround(tile_new, CLEAR_DESERT));
 				tile = tile_new;
 			}