diff --git a/5_users_and_rights.md b/5_users_and_rights.md
index c2cc3320052bcaaab1554aaf241437dafece5e4e..946738304d8fa595b048557fe4d7d7dad79b077b 100644
--- a/5_users_and_rights.md
+++ b/5_users_and_rights.md
@@ -275,4 +275,4 @@ When SE Linux is enabled on a system, every **processes** can be assigned a set
 > - `groups` to list groups
 > - `usermod`to manipulate user's to groups
 
-[To understand more about processes you can head to the next section.](https://http://perso.ens-lyon.fr/laurent.modolo/unix/6_unix_processes.html)
\ No newline at end of file
+[To understand more about processes you can head to the next section.](http://perso.ens-lyon.fr/laurent.modolo/unix/6_unix_processes.html)
\ No newline at end of file
diff --git a/6_unix_processes.md b/6_unix_processes.md
index e5bd4772acb3433c4023f43411271eefa03730b3..d71d972b0c349251376b6f5aaa700be4fcb02067 100644
--- a/6_unix_processes.md
+++ b/6_unix_processes.md
@@ -244,5 +244,5 @@ Without root access you can only set value higher than 0.
 > - `stress` to launch mock computation
 > - `nice`/`renince` to change the nice value of a process
 
-[To learn how to articulate processes you can head to the next section.](https://http://perso.ens-lyon.fr/laurent.modolo/unix/7_streams_and_pipes.html)
+[To learn how to articulate processes you can head to the next section.](http://perso.ens-lyon.fr/laurent.modolo/unix/7_streams_and_pipes.html)
 
diff --git a/7_streams_and_pipes.md b/7_streams_and_pipes.md
index cc8cc0f23c8ddc07499b1efe6d8e33bd83ecc9ca..977ed5a99a46d6bf10bfaca350fa24f775adab7c 100644
--- a/7_streams_and_pipes.md
+++ b/7_streams_and_pipes.md
@@ -141,4 +141,4 @@ Remember that most Unix command process input and output line by line. Which mea
 > - `|` the pipe operator to connect processes
 > - `wget` to download files
 
-[You can head to the next session to apply pipe and stream manipulation.](https://http://perso.ens-lyon.fr/laurent.modolo/unix/8_text_manipulation.html)
+[You can head to the next session to apply pipe and stream manipulation.](http://perso.ens-lyon.fr/laurent.modolo/unix/8_text_manipulation.html)
\ No newline at end of file