diff --git a/free-programming-books-es.md b/free-programming-books-es.md
index a25e601d..78341ad8 100644
--- a/free-programming-books-es.md
+++ b/free-programming-books-es.md
@@ -1,8 +1,8 @@
 ###Index
-* [Agnósticos](#agnostico)
+* [Agnósticos](#agnosticos)
     * [Algoritmos y Estructuras de Datos](#algoritmos)
     * [Ciencia Computacional](#ciencia-computacional)
-    * [Metodologías de desarrollo de software](#metodologias-de-desarrollo-de-software)
+    * [Metodologías de desarrollo de software](#metodolog%C3%ADas-de-desarrollo-de-software)
 * [Android](#android)
 * [Assembly Language](#assembly-language)
 * [Metalistas](#metalistas)
diff --git a/free-programming-books-it.md b/free-programming-books-it.md
index d7700dca..a5f769a7 100644
--- a/free-programming-books-it.md
+++ b/free-programming-books-it.md
@@ -1,6 +1,6 @@
 ###Index
 * [Agnostico](#agnostico)
-    * [Metodologie di sviluppo del software](#metodologie-di-sviluppo-software)
+    * [Metodologie di sviluppo del software](#metodologie-di-sviluppo-del-software)
 * [Android](#android)
 * [BASH](#bash)
 * [C](#c)
diff --git a/free-programming-books-ru.md b/free-programming-books-ru.md
index 7a85bca8..3c60b98a 100644
--- a/free-programming-books-ru.md
+++ b/free-programming-books-ru.md
@@ -1,6 +1,6 @@
 ###Index
 * [Списки книг](#meta-lists)
-* [Language Agnotic](#language-agnostic)
+* [Language Agnostic](#language-agnostic)
 * [Bash](#bash)
 * [CoffeeScript](#coffeescript)
 * [Git](#git)