diff --git a/books/free-programming-books-pt_BR.md b/books/free-programming-books-pt_BR.md
index e92201b72..70740f5c6 100644
--- a/books/free-programming-books-pt_BR.md
+++ b/books/free-programming-books-pt_BR.md
@@ -68,7 +68,7 @@
 
 ### Assembly
 
-* [Assembly x86](https://mentebinaria.gitbook.io/assembly-x86/) - Luis Felipe, Mente Binária
+* [Assembly x86](https://mentebinaria.gitbook.io/assembly-x86/) - Luis Felipe, Mente Binária (gitbook)
 
 
 ### C