diff --git a/backend/src/plugins/Tags.ts b/backend/src/plugins/Tags.ts
index 429a9ea5..c8e5589f 100644
--- a/backend/src/plugins/Tags.ts
+++ b/backend/src/plugins/Tags.ts
@@ -111,7 +111,7 @@ export class TagsPlugin extends ZeppelinPlugin<TConfigSchema> {
         }
 
         const delay = convertDelayStringToMS(timeDiff);
-        return moment(moment().valueOf() - delay);
+        return moment(moment().valueOf() - delay).valueOf();
       },
 
       humanizeTime(timems) {