diff --git a/src/main/java/cn/org/bjca/trust/java/imserver/im/msg/ConnectMessage.java b/src/main/java/cn/org/bjca/trust/java/imserver/im/msg/ConnectMessage.java
index d831814..01f71dd 100644
--- a/src/main/java/cn/org/bjca/trust/java/imserver/im/msg/ConnectMessage.java
+++ b/src/main/java/cn/org/bjca/trust/java/imserver/im/msg/ConnectMessage.java
@@ -18,7 +18,7 @@ public class ConnectMessage extends PacketMessage {
     }
 
     @OneToOne(cascade = CascadeType.ALL)
-    @JoinColumn(name = "device_id", referencedColumnName = "_id")
+    @JoinColumn(referencedColumnName = "_id")
     private DeviceEntity device;
 
     public ConnectMessage(DeviceEntity device) {