diff --git a/src/utils.ts b/src/utils.ts
index dd44a89..77b98f8 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -276,19 +276,20 @@ export async function adaptSession(bot: BaseBot, data: OneBot.Payload) {
         session.type = 'onebot'
         session.subtype = 'channel-destroyed'
         break
-      case 'offline_file':
-        session.elements = [h('file', data.file)]
-        session.type = 'message'
-        session.subtype = 'private'
-        session.isDirect = true
-        session.subsubtype = 'offline-file-added'
-        break
-      case 'group_upload':
-        session.elements = [h('file', data.file)]
-        session.type = 'message'
-        session.subtype = 'group'
-        session.subsubtype = 'guild-file-added'
-        break
+      // https://github.com/koishijs/koishi-plugin-adapter-onebot/issues/33
+      // case 'offline_file':
+      //   session.elements = [h('file', data.file)]
+      //   session.type = 'message'
+      //   session.subtype = 'private'
+      //   session.isDirect = true
+      //   session.subsubtype = 'offline-file-added'
+      //   break
+      // case 'group_upload':
+      //   session.elements = [h('file', data.file)]
+      //   session.type = 'message'
+      //   session.subtype = 'group'
+      //   session.subsubtype = 'guild-file-added'
+      //   break
       default: return
     }
   } else return