diff --git a/src/main/kotlin/com/ray650128/service/UserService.kt b/src/main/kotlin/com/ray650128/service/UserService.kt
index 5dfcc1d..5163ec0 100644
--- a/src/main/kotlin/com/ray650128/service/UserService.kt
+++ b/src/main/kotlin/com/ray650128/service/UserService.kt
@@ -7,7 +7,7 @@ import org.litote.kmongo.id.toId
 
 class UserService {
     private val client = KMongo.createClient("mongodb://www.ray650128.com:27017")
-    private val database = client.getDatabase("users")
+    private val database = client.getDatabase("ar_system")
     private val userCollection = database.getCollection<User>()
 
     fun create(user: User): Id<User>? {