diff --git a/OjtPlugin.inc.php b/OjtPlugin.inc.php
index 35774dc..fa31ef3 100644
--- a/OjtPlugin.inc.php
+++ b/OjtPlugin.inc.php
@@ -59,7 +59,7 @@ function getCanEnable() {
 	 * @copydoc Plugin::getCanDisable()
 	 */
 	function getCanDisable() {
-		return $this->getRequest()->getUser()->hasRole([ROLE_ID_SITE_ADMIN], $this->getCurrentContextId());
+		return $this->getRequest()->getUser()->hasRole([ROLE_ID_SITE_ADMIN], CONTEXT_SITE);
 	}
 
     public function apiUrl()