diff --git a/src/main/kotlin/net/lz1998/mirai/entity/WebSocketBotClient.kt b/src/main/kotlin/net/lz1998/mirai/entity/WebSocketBotClient.kt
index 48d86c5..dcdd069 100644
--- a/src/main/kotlin/net/lz1998/mirai/entity/WebSocketBotClient.kt
+++ b/src/main/kotlin/net/lz1998/mirai/entity/WebSocketBotClient.kt
@@ -96,7 +96,7 @@ class WebsocketBotClient(override var botId: Long, override var password: String
     override suspend fun initBot() {
         wsClient = httpClient.newWebSocket(wsRequest, wsListener)
         bot = Bot(botId, password) {
-            fileStrBasedDeviceInfo("device.json")
+            fileStrBasedDeviceInfo("device/${botId}.json")
             loginSolver = MyLoginSolver
             noNetworkLog()
         }.alsoLogin()
diff --git a/src/main/kotlin/net/lz1998/mirai/ext/MyDeviceInfo.kt b/src/main/kotlin/net/lz1998/mirai/ext/MyDeviceInfo.kt
index 43a231a..8a6ea09 100644
--- a/src/main/kotlin/net/lz1998/mirai/ext/MyDeviceInfo.kt
+++ b/src/main/kotlin/net/lz1998/mirai/ext/MyDeviceInfo.kt
@@ -189,6 +189,9 @@ fun BotConfiguration.getFileStrBasedDeviceInfoSupplier(filename: String): ((Cont
 fun File.loadStrAsDeviceInfo(json: Json, context: Context = ContextImpl()): DeviceInfo {
     if (!this.exists() || this.length() == 0L) {
         return MyDeviceInfo(context).also {
+            if (!this.parentFile.exists()) {
+                this.parentFile.mkdirs()
+            }
             this.writeText(json.encodeToString(MyDeviceInfo.serializer(), it))
         }
     }