diff --git a/src/main.js b/src/main.js
index c7246e4..4ae7cad 100644
--- a/src/main.js
+++ b/src/main.js
@@ -45,9 +45,8 @@ const threadRow=t=>{const icon=t.type==='folder'?'folder':(t.type==='file'?'file
 let sortedThreads=[],isAddingThreads=false;const THREAD_PAGE_SIZE=50;
 async function renderThreads(){
   sortedThreads=[...THREAD.list].filter(t=>t.status!=='deleted').sort((a,b)=>{
-    if(a.type==='file'&&b.type!=='file')return -1;
-    if(a.type!=='file'&&b.type==='file')return 1;
-    return (b.pinned-a.pinned)||(b.updatedAt-a.updatedAt);
+    const r=t=>t.type==='folder'?0:t.type==='file'?1:2;
+    return (r(a)-r(b))||(b.pinned-a.pinned)||(b.updatedAt-a.updatedAt);
   });
   el.threadList.innerHTML=sortedThreads.slice(0,THREAD_PAGE_SIZE).map(threadRow).join('');
   el.threadList.scrollTop=0;