diff --git a/packages/local-sync/src/new-message-processor/detect-thread.js b/packages/local-sync/src/new-message-processor/detect-thread.js
index f34c24335..b98abeb16 100644
--- a/packages/local-sync/src/new-message-processor/detect-thread.js
+++ b/packages/local-sync/src/new-message-processor/detect-thread.js
@@ -145,9 +145,7 @@ function detectThread({db, message}) {
     if (!isSent && ((message.date > thread.lastMessageReceivedDate) || !thread.lastMessageReceivedDate)) {
       thread.lastMessageReceivedDate = message.date;
     }
-    if (!thread.folders.find(f => f.id === message.folderId)) {
-      thread.folders.push(message.folder)
-    }
+
     return thread.save()
     .then((saved) => {
       const promises = []