diff --git a/ch03_opening_and_searching_files.md b/ch03_opening_and_searching_files.md
index 072e956..46ddd71 100644
--- a/ch03_opening_and_searching_files.md
+++ b/ch03_opening_and_searching_files.md
@@ -76,12 +76,12 @@ Esto es lo que significa:
 
 La conclusión aquí es que puedes modificar tus propios caminos. Supongamos que esta es la estructura de tu proyecto:
 ```
-▾ app/
-  ▸ assets/
-  ▾ controllers/
-      application_controller.rb
-      comments_controller.rb
-      users_controller.rb
+app/
+  - assets/
+  - controllers/
+     - application_controller.rb
+     - comments_controller.rb
+     - users_controller.rb
   ...
 ```
 
diff --git a/ch12_search_and_substitute.md b/ch12_search_and_substitute.md
index da773c3..d50fc4a 100644
--- a/ch12_search_and_substitute.md
+++ b/ch12_search_and_substitute.md
@@ -638,8 +638,8 @@ small dog
 Assume your directory structure looks like this:
 
 ```
-├── food.txt
-├── animal.txt
+- food.txt
+- animal.txt
 ```
 
 First, capture both `food.txt` and `animal.txt` inside `:args`. Recall from earlier chapters that `:args` can be used to create a list of file names. There are several ways to do this from inside Vim: