From b9de90c485d8829b6fd690de0cf7d32de75769a5 Mon Sep 17 00:00:00 2001
From: Tom Najdek <tom@doppnet.com>
Date: Fri, 5 Apr 2024 12:57:10 +0200
Subject: [PATCH] Mendeley importer: Sniff for mime-type if `octet-stream`
 reported. #3454

---
 chrome/content/zotero/import/mendeley/mendeleyImport.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chrome/content/zotero/import/mendeley/mendeleyImport.js b/chrome/content/zotero/import/mendeley/mendeleyImport.js
index 9d6613e2e6..669b4c23a4 100644
--- a/chrome/content/zotero/import/mendeley/mendeleyImport.js
+++ b/chrome/content/zotero/import/mendeley/mendeleyImport.js
@@ -1627,7 +1627,7 @@ Zotero_Import_Mendeley.prototype._saveAnnotations = async function (annotations,
 			if (file) {
 				// Fix blank PDF attachment MIME type from previous imports
 				let type = 'application/pdf';
-				if (!attachmentItem.attachmentContentType) {
+				if (!attachmentItem.attachmentContentType || attachmentItem.attachmentContentType === 'application/octet-stream') {
 					if (Zotero.MIME.sniffForMIMEType(await Zotero.File.getSample(file)) == type) {
 						attachmentItem.attachmentContentType = type;
 						await attachmentItem.saveTx(this._saveOptions);