diff --git a/tutos/computer.txt b/tutos/computer.txt
index dc1d108..66a11e9 100644
--- a/tutos/computer.txt
+++ b/tutos/computer.txt
@@ -51,3 +51,8 @@
 		display: none !important;
 	}
 
+**open default sites with firefox :**
+	https://askubuntu.com/questions/79305/how-do-i-change-my-default-browser
+	**sudo update-alternatives --config x-www-browser**
+	**sudo update-alternatives --config gnome-www-browser**
+