diff --git a/autorite_options.php b/autorite_options.php
index 0f8ebc9..7f5ee18 100644
--- a/autorite_options.php
+++ b/autorite_options.php
@@ -1,13 +1,13 @@
 <?php
 
 if (!defined("_ECRIRE_INC_VERSION")) return;    #securite
-    
-$GLOBALS['autorite'] = @unserialize($GLOBALS['meta']['autorite']);
 
 ##
 ## Dire aux crayons si les visiteurs anonymes ont des droits
 ##
-if ((is_array($GLOBALS['autorite'])) AND 
+if (test_plugin_actif('crayons')
+  and !empty($GLOBALS['meta']['autorite'])
+  and (is_array($GLOBALS['autorite'] = unserialize($GLOBALS['meta']['autorite']))) AND
     (
         (isset($GLOBALS['autorite']['espace_wiki']) AND 
 			isset($GLOBALS['autorite']['espace_wiki_anonyme'])