--- a/dock_gui.c	Sat Jun 25 06:15:43 2005 +0000
+++ b/dock_gui.c	Sat Jun 25 16:44:57 2005 +0000
@@ -168,11 +168,11 @@
 		TileIndex tile_to;
 
 		tile_from = tile_to = e->place.tile;
-		switch(GetTileSlope(tile_from, NULL)) {
-		case 3: tile_to += TILE_XY(-1,0); break;
-		case 6:	tile_to += TILE_XY(0,-1);	break;
-		case 9:	tile_to += TILE_XY(0,1);	break;
-		case 12:tile_to += TILE_XY(1,0);	break;
+		switch (GetTileSlope(tile_from, NULL)) {
+			case  3: tile_to += TileDiffXY(-1,  0); break;
+			case  6: tile_to += TileDiffXY( 0, -1); break;
+			case  9: tile_to += TileDiffXY( 0,  1); break;
+			case 12: tile_to += TileDiffXY( 1,  0); break;
 		}
 		VpSetPresizeRange(tile_from, tile_to);
 	} break;