diff --git a/technical/0.-Introduction.md b/technical/0.-Introduction.md
index 76f2eb47..099398fe 100644
--- a/technical/0.-Introduction.md
+++ b/technical/0.-Introduction.md
@@ -5,9 +5,9 @@ Greetings people. In this part of the documentation, you will learn how Ring wor
 2. Basic features
     1. [Manage accounts](2.1. Manage Accounts)
     2. [Manage contacts](2.2. Manage contacts)
-    2. Let's communicate, by text!
-    3. [Let's do a call!](https://git.jami.net/savoirfairelinux/ring-project/wikis/2.4.-Let's-do-a-call!)
-    4. Send a file
+    3. Let's communicate, by text!
+    4. [Let's do a call!](https://git.jami.net/savoirfairelinux/ring-project/wikis/2.4.-Let's-do-a-call!)
+    5. [File transfer](https://git.jami.net/savoirfairelinux/ring-project/wikis/tutorials/2.5.-File-transfer)
 3. Advanced features
     1. Manage audio/videos
     2. Call recording