diff --git a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongListRoutes.kt b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongListRoutes.kt
index b2c063f..b9c0019 100644
--- a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongListRoutes.kt
+++ b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/WSSongListRoutes.kt
@@ -41,7 +41,7 @@ fun Routing.wsSongListRoutes() {
 
     webSocket("/songlist") {
         val session = call.sessions.get<UserSession>()
-        val user = session?.id?.let { UserService.getUserWithNaverId( it.toLong() ) }
+        val user = session?.id?.let { UserService.getUserWithNaverId( it ) }
         if (user == null) {
             close(CloseReason(CloseReason.Codes.CANNOT_ACCEPT, "Invalid SID"))
             return@webSocket