diff --git a/doc/en/installation/from_packages.rst b/doc/en/installation/from_packages.rst
index 48d280f85125c24f4c45bcfe7c3bbba717220e97..d82b5061e6e207e2422d75fbed5e345cf5e40ad3 100644
--- a/doc/en/installation/from_packages.rst
+++ b/doc/en/installation/from_packages.rst
@@ -35,64 +35,33 @@ For CentOS 7.
 
 The repository is now installed.
 
-Any operating system
---------------------
-
-Disable SELinux
-^^^^^^^^^^^^^^^
-
-SELinux should be disabled; for this, you have to modify the file "/etc/sysconfig/selinux" and replace "enforcing" by "disabled":
-
-::
-
-    SELINUX=disabled
-
-PHP timezone
-^^^^^^^^^^^^
-
-PHP timezone should be set; go to /etc/php.d directory and create a file named php-timezone.ini who contain the following line :
-
-::
-
-    date.timezone = Europe/Paris
-
-After saving the file, please don't forget to restart apache server.
-
-Firewall
-^^^^^^^^
-
-Add firewall rules or disable it. To disable it execute folowwing commands:
-
-* **iptables** (CentOS v6) ::
+*********************
+Centreon installation
+*********************
 
-    # /etc/init.d/iptables save
-    # /etc/init.d/iptables stop
-    # chkconfig iptables off
+Install globaly Centreon
+------------------------
 
-* **firewalld** (CentOS v7) ::
+Ce chapitre décrit l'installation golable de Centreon.
+The chapter describes the global installation of Centreon.
 
-    # systemctl stop firewalld
-    # systemctl disable firewalld
-    # systemctl status firewalld
+Perform the command:
 
-DataBase Management System
-^^^^^^^^^^^^^^^^^^^^^^^^^^
+ ::
 
-The Mysql database server should be available to complete installation (locally or not). MariaDB is recommended.
+   $ yum install centreon
+   $ yum update
 
-For CentOS / RHEL in version 7, it is necessary to modify **LimitNOFILE** limitation.
-Edit **/etc/systemd/system/mysqld.service** file and change ::
+Vous devez aussi récupérer la clef GPG et la placer dans le dossier rpm-gpg.
+You also have to recover the GPG key and place it in the rpm-gpg file.
 
-    LimitNOFILE=32000
+Perform the command:
 
-Save the file and execute the folowwing commands::
+ ::
 
-    # systemctl daemon-reload
-    # service mysqld restart
+   $ cd /etc/pki/rpm-gpg/
+   $ wget http://yum-1.centreon.com/standard/3.4/el7/stable/RPM-GPG-KEY-CES
 
-*********************
-Centreon installation
-*********************
 
 Install a central server
 ------------------------
@@ -144,6 +113,61 @@ Copy this key on the collector:
 
 .. _installation_web:
 
+Any operating system
+--------------------
+
+Disable SELinux
+^^^^^^^^^^^^^^^
+
+SELinux should be disabled; for this, you have to modify the file "/etc/sysconfig/selinux" and replace "enforcing" by "disabled":
+
+::
+
+    SELINUX=disabled
+
+PHP timezone
+^^^^^^^^^^^^
+
+PHP timezone should be set; go to /etc/php.d directory and create a file named php-timezone.ini who contain the following line :
+
+::
+
+    date.timezone = Europe/Paris
+
+After saving the file, please don't forget to restart apache server.
+
+Firewall
+^^^^^^^^
+
+Add firewall rules or disable it. To disable it execute folowwing commands:
+
+* **iptables** (CentOS v6) ::
+
+    # /etc/init.d/iptables save
+    # /etc/init.d/iptables stop
+    # chkconfig iptables off
+
+* **firewalld** (CentOS v7) ::
+
+    # systemctl stop firewalld
+    # systemctl disable firewalld
+    # systemctl status firewalld
+
+DataBase Management System
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The Mysql database server should be available to complete installation (locally or not). MariaDB is recommended.
+
+For CentOS / RHEL in version 7, it is necessary to modify **LimitNOFILE** limitation.
+Edit **/etc/systemd/system/mysqld.service** file and change ::
+
+    LimitNOFILE=32000
+
+Save the file and execute the folowwing commands::
+
+    # systemctl daemon-reload
+    # service mysqld restart
+
 Web Installation
 ================
 
diff --git a/doc/fr/installation/from_packages.rst b/doc/fr/installation/from_packages.rst
index 45603d8d366e0fc83185d3ced00f5c9076e8f79a..ae6fe35db3b3d63c075772250be7b2d9efe5c786 100644
--- a/doc/fr/installation/from_packages.rst
+++ b/doc/fr/installation/from_packages.rst
@@ -53,8 +53,7 @@ Exécutez la commande :
    $ yum install centreon
    $ yum update
 
-Un échec de récupération de la GPG peut empêcher l'installation de Centreon.
-Pour éviter cela vous devez renseigner la clef concernée.
+Vous devez aussi récupérer la clef GPG et la placer dans le dossier rpm-gpg.
 
 Exécutez la commande :