--- a/ui_curses.c
+++ b/ui_curses.c
@@ -928,7 +928,7 @@ static void draw_separator(void)
 	(void) mvaddch(0, tree_win_w, ' ');
 	bkgdset(pairs[CURSED_SEPARATOR]);
 	for (row = 1; row < LINES - 3; row++)
-		(void) mvaddch(row, tree_win_w, ACS_VLINE);
+		(void) mvaddch(row, tree_win_w, '|');
 }
 
 static void do_update_view(int full)