diff --git a/bl-kernel/abstract/plugin.class.php b/bl-kernel/abstract/plugin.class.php
index 55313382..fc065f33 100644
--- a/bl-kernel/abstract/plugin.class.php
+++ b/bl-kernel/abstract/plugin.class.php
@@ -66,6 +66,7 @@ class Plugin {
 		if ($this->installed()) {
 			$Tmp = new dbJSON($this->filenameDb);
 			$this->db = $Tmp->db;
+			$this->prepare();
 		}
 	}
 
@@ -270,10 +271,16 @@ class Plugin {
 
 	public function init()
 	{
-		// This method is used on childre classes.
+		// This method is used on children classes
 		// The user can define his own field of the database
 	}
 
+	public function prepare()
+	{
+		// This method is used on children classes
+		// The user can prepare the plugin, when it is installed
+	}
+
 	public function post()
 	{
 		$args = $_POST;