diff --git a/h5p.classes.php b/h5p.classes.php
index 2dc1bb7..85d0616 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -2232,7 +2232,7 @@ class H5PCore {
         }
       }
       if($platformInfo['uuid'] === '' && isset($json->uuid)) {
-        $this->h5pF->setOption('h5p_site_uuid', $json->uuid);
+        $this->h5pF->setOption('site_uuid', $json->uuid);
       }
     }
   }