diff --git a/lib/navigationlib.php b/lib/navigationlib.php
index 84afe0cca3e..a0aa2171b75 100644
--- a/lib/navigationlib.php
+++ b/lib/navigationlib.php
@@ -4077,6 +4077,8 @@ class navigation_json {
             $attributes['link'] = $child->action;
         } else if ($child->action instanceof moodle_url) {
             $attributes['link'] = $child->action->out();
+        } else if ($child->action instanceof action_link) {
+            $attributes['link'] = $child->action->url->out();
         }
         $attributes['hidden'] = ($child->hidden);
         $attributes['haschildren'] = ($child->children->count()>0 || $child->type == navigation_node::TYPE_CATEGORY);