diff --git a/books/free-programming-books-fa_IR.md b/books/free-programming-books-fa_IR.md
index d0cd40f05..1174bf998 100644
--- a/books/free-programming-books-fa_IR.md
+++ b/books/free-programming-books-fa_IR.md
@@ -1,4 +1,4 @@
-### فهرست
+### Index
 
 * [رایانش ابری](#%D8%B1%D8%A7%DB%8C%D8%A7%D9%86%D8%B4-%D8%A7%D8%A8%D8%B1%DB%8C)
 * [مهندسی نرم‌افزار](#%D9%85%D9%87%D9%86%D8%AF%D8%B3%DB%8C-%D9%86%D8%B1%D9%85%E2%80%8C%D8%A7%D9%81%D8%B2%D8%A7%D8%B1)
diff --git a/books/free-programming-books-pt_BR.md b/books/free-programming-books-pt_BR.md
index bedda2104..da1bba842 100644
--- a/books/free-programming-books-pt_BR.md
+++ b/books/free-programming-books-pt_BR.md
@@ -1,4 +1,4 @@
-### Índice
+### Index
 
 * [Agnósticos](#agnósticos)
   * [IDE / Editores](#ide--editores)
diff --git a/books/free-programming-books-pt_PT.md b/books/free-programming-books-pt_PT.md
index b2467a2c2..6b4818dd2 100644
--- a/books/free-programming-books-pt_PT.md
+++ b/books/free-programming-books-pt_PT.md
@@ -1,4 +1,4 @@
-### Indice
+### Index
 
 * [C/C++](#cc)
 * [CSS](#css)
diff --git a/books/free-programming-books-tr.md b/books/free-programming-books-tr.md
index c7f58763d..23853fdfa 100644
--- a/books/free-programming-books-tr.md
+++ b/books/free-programming-books-tr.md
@@ -1,4 +1,4 @@
-### İçindekiler
+### Index
 
 * [Algoritma ve Veri Yapıları](#algoritma-ve-veri-yapilari)
 * [Android](#android)
diff --git a/books/free-programming-books-zh.md b/books/free-programming-books-zh.md
index d2a261963..05d48a664 100644
--- a/books/free-programming-books-zh.md
+++ b/books/free-programming-books-zh.md
@@ -1,4 +1,4 @@
-## 目录
+## Index
 
 * [语言无关](#语言无关)
   * [版本控制](#版本控制)
diff --git a/courses/free-courses-es.md b/courses/free-courses-es.md
index d3f01d3ce..1e32082c7 100644
--- a/courses/free-courses-es.md
+++ b/courses/free-courses-es.md
@@ -1,4 +1,4 @@
-### Índice
+### Index
 
 * [Android](#android)
 * [Arduino](#arduino)
diff --git a/courses/free-courses-it.md b/courses/free-courses-it.md
index 4b26e1c07..ff64256f8 100644
--- a/courses/free-courses-it.md
+++ b/courses/free-courses-it.md
@@ -1,4 +1,4 @@
-### Indice
+### Index
 
 * [Algoritmi e Strutture Dati](#algoritmi-e-strutture-dati)
 * [Android](#android)
diff --git a/courses/free-courses-km.md b/courses/free-courses-km.md
index f58200f0e..54e4f97a9 100644
--- a/courses/free-courses-km.md
+++ b/courses/free-courses-km.md
@@ -1,4 +1,4 @@
-### មាតិកា
+### Index
 
 * [Computer Science](#computer-science)
 * [Flutter](#flutter)
diff --git a/courses/free-courses-pt_PT.md b/courses/free-courses-pt_PT.md
index fbbab78e8..6c2c74ac7 100644
--- a/courses/free-courses-pt_PT.md
+++ b/courses/free-courses-pt_PT.md
@@ -1,4 +1,4 @@
-### Índice
+### Index
 
 * [Arduino](#arduino)
 * [Raspberry Pi](#raspberry-pi)
@@ -12,4 +12,3 @@
 ### Raspberry Pi
 
 * [Curso Raspberry Pi](https://www.electrofun.pt/blog/curso-raspberry-pi-1-introducao-indice/)
-
diff --git a/courses/free-courses-ru.md b/courses/free-courses-ru.md
index dfab0d590..f56db49e0 100644
--- a/courses/free-courses-ru.md
+++ b/courses/free-courses-ru.md
@@ -1,4 +1,4 @@
-### Cодержание
+### Index
 
 * [Дизайн и Aрхитектура](#design-architecture)
 * [C++](#cpp)
diff --git a/more/free-programming-interactive-tutorials-pt_BR.md b/more/free-programming-interactive-tutorials-pt_BR.md
index 196d8e79e..3addc6bd6 100644
--- a/more/free-programming-interactive-tutorials-pt_BR.md
+++ b/more/free-programming-interactive-tutorials-pt_BR.md
@@ -1,4 +1,4 @@
-### Índice
+### Index
 
 * [Python](#python)