diff --git a/imap-core/lib/indexer/indexer.js b/imap-core/lib/indexer/indexer.js
index 484bb4c8..8d6607b5 100644
--- a/imap-core/lib/indexer/indexer.js
+++ b/imap-core/lib/indexer/indexer.js
@@ -628,7 +628,7 @@ class Indexer {
                 }
                 mimeTree.attachmentMap[node.attachmentId] = id;
 
-                let attachmentInfo = mimeTree.attachments && mimeTree.attachments.find(a => a.id === node.attachmentId);
+                let attachmentInfo = maildata.attachments && maildata.attachments.find(a => a.id === node.attachmentId);
                 if (attachmentInfo && node.body) {
                     attachmentInfo.size = node.body.length;
                 }
diff --git a/package.json b/package.json
index acff79a5..7c85b69c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "wildduck",
-    "version": "1.29.5",
+    "version": "1.29.6",
     "description": "IMAP/POP3 server built with Node.js and MongoDB",
     "main": "server.js",
     "scripts": {