diff --git a/chrome/content/zotero/osfile.mjs b/chrome/content/zotero/osfile.mjs
index 8fbc56cb1b..0c1892cdc5 100644
--- a/chrome/content/zotero/osfile.mjs
+++ b/chrome/content/zotero/osfile.mjs
@@ -210,7 +210,8 @@ export let OS = {
 				isSymLink: true, // Supposedly was broken in Firefox
 				size: info.size,
 				lastAccessDate: new Date(info.lastAccessed),
-				lastModificationDate: new Date(info.lastModified)
+				lastModificationDate: new Date(info.lastModified),
+				unixMode: !isWin ? info.permissions : undefined,
 			};
 		},