diff --git a/pkgs/racket-doc/scribblings/reference/sequences.scrbl b/pkgs/racket-doc/scribblings/reference/sequences.scrbl
index c49ced9fb3..3285dc398c 100644
--- a/pkgs/racket-doc/scribblings/reference/sequences.scrbl
+++ b/pkgs/racket-doc/scribblings/reference/sequences.scrbl
@@ -388,12 +388,14 @@ each element in the sequence.
     (code:comment @#,t{Given a directory tree:})
     (code:comment @#,t{})
     (code:comment @#,t{ /example})
-    (code:comment @#,t{ ├── a})
-    (code:comment @#,t{ │   ├── alpha})
-    (code:comment @#,t{ │   └── apple})
-    (code:comment @#,t{ ├── b})
-    (code:comment @#,t{ │   └── beta})
-    (code:comment @#,t{ └── c})
+    (code:comment @#,t{ +-- a})
+    (code:comment @#,t{ |   +-- alpha})
+    (code:comment @#,t{ |   +-- apple})
+    (code:comment @#,t{ |})
+    (code:comment @#,t{ +-- b})
+    (code:comment @#,t{ |   +-- beta})
+    (code:comment @#,t{ |})
+    (code:comment @#,t{ +-- c})
     (code:comment @#,t{})
     (eval:alts
       (parameterize ([current-directory "/example"])