Index: src/map.cpp
===================================================================
--- src/map.cpp	(revision 18754)
+++ src/map.cpp	(working copy)
@@ -247,7 +247,7 @@
 
 		/* If tile test is not successful, get one tile down and left,
 		 * ready for a test in first circle around center tile */
-		*tile = TILE_ADD(*tile, TileOffsByDir(DIR_W));
+		*tile = TILE_ADD(*tile, TileOffsByDir(DIR_N));
 		return CircularTileSearch(tile, size / 2, 1, 1, proc, user_data);
 	} else {
 		return CircularTileSearch(tile, size / 2, 0, 0, proc, user_data);