diff --git a/book/syntax_exercises/009.md b/book/syntax_exercises/009.md
index 8b23a46..4fb0e8f 100644
--- a/book/syntax_exercises/009.md
+++ b/book/syntax_exercises/009.md
@@ -24,6 +24,12 @@ For example, if you want to link to Exercise 7, you can write:
 ```md
 [Go to Exercise 7](../exercises/007.md)
 ```
+
+If you leave the text part empty, the title of the chapter you're referring to will be used:
+
+```md
+[](path/to/file.md)
+```
 3. Try out another way of referencing by using a target header. Navigate to the chapter or section you want to reference and assign it an identifier using `{ref}` as shown in the example below.
 
 ```md