diff --git a/lib/classes/sidebar/ResourceTreeWidget.class.php b/lib/classes/sidebar/ResourceTreeWidget.class.php
index 75befd4e616419933dcedb4850723d967f0a2ff1..31e02c40203e94bd04787f291c2377b0717ade9f 100644
--- a/lib/classes/sidebar/ResourceTreeWidget.class.php
+++ b/lib/classes/sidebar/ResourceTreeWidget.class.php
@@ -76,6 +76,7 @@ class ResourceTreeWidget extends SidebarWidget
         }
 
         $this->parameter_name = $parameter_name;
+        $this->forced_rendering = true;
     }
 
     /**