diff --git a/cron/centKnowledgeSynchronizer.php b/cron/centKnowledgeSynchronizer.php
index 84ecf6a306d863cd3a82ad447a206359fd08df4c..c0168e7ad1eca87b3b35f89548c4c77aab5e38b1 100644
--- a/cron/centKnowledgeSynchronizer.php
+++ b/cron/centKnowledgeSynchronizer.php
@@ -35,4 +35,5 @@
 
 require_once realpath(dirname(__FILE__) . "/../www/class/centreon-knowledge/wikiApi.class.php");
 
-(New WikiApi)->synchronize();
\ No newline at end of file
+$wikiApi = new WikiApi();
+$wikiApi->synchronize();
diff --git a/www/class/centreon-knowledge/wikiApi.class.php b/www/class/centreon-knowledge/wikiApi.class.php
index cdcbce7c117092f0b030aa91b587566a5a12318b..9ebc85caedb8cafbbc1f7abb587933872a60dbf8 100644
--- a/www/class/centreon-knowledge/wikiApi.class.php
+++ b/www/class/centreon-knowledge/wikiApi.class.php
@@ -90,7 +90,11 @@ class WikiApi
 
         $version = $result['query']['general']['generator'];
         $version = explode(' ', $version);
-        return (float)$version[1];
+        if (isset($version[1])) {
+            return (float)$version[1];
+        } else {
+            throw new \Exception("An error occured, please check your Knowledge base configuration");
+        }
     }
 
     public function login()