diff --git a/trellobot.js b/trellobot.js
index b3b9fab..4c828b9 100644
--- a/trellobot.js
+++ b/trellobot.js
@@ -316,7 +316,7 @@ events.on('updateCheckItemStateOnCard', (event, board) => {
 events.on('maxId', (id) => {
     if (latestActivityID == id) return
     latestActivityID = id
-    fs.writeFileSync('.latestActivityID', id)
+    fs.writeFileSync('.latestActivityID', id + "")
 })
 
 const send = (embed, content = ``) => conf.channel.send(`${content} ${conf.contentString}`, {embed:embed}).catch(err => console.error(err))