diff --git a/module/time/rdd-calendrier.js b/module/time/rdd-calendrier.js
index 62769c7a..8b6d653b 100644
--- a/module/time/rdd-calendrier.js
+++ b/module/time/rdd-calendrier.js
@@ -110,6 +110,8 @@ export class RdDCalendrier extends Application {
     this.render(true)
   }
 
+  async close() { }
+
   async onUpdateSetting(setting, update, options, id) {
     if (setting.key == SYSTEM_RDD + '.' + WORLD_TIMESTAMP_SETTING) {
       this.timestamp = RdDTimestamp.getWorldTime();