diff --git a/www/class/centreon-knowledge/wikiApi.class.php b/www/class/centreon-knowledge/wikiApi.class.php
index e951ae8bc578284350e84369e7ab1090a78f28e2..6754cc5f3757d9e3fede9a30dd6bb142e2755788 100644
--- a/www/class/centreon-knowledge/wikiApi.class.php
+++ b/www/class/centreon-knowledge/wikiApi.class.php
@@ -98,7 +98,11 @@ 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()