diff --git a/core/maingate.go b/core/maingate.go
index e3dbbd5..d82bbb0 100644
--- a/core/maingate.go
+++ b/core/maingate.go
@@ -737,7 +737,11 @@ func (mg *Maingate) getUserTokenWithCheck(platform string, userid string, brinfo
 		return info, err
 	}
 	if found == nil {
-		return info, errors.New("user token not found: " + platform + " / " + userid + " / " + brinfo)
+		return info, errors.New("user token not found :" + platform + " / " + userid + " / " + brinfo)
+	}
+
+	if found["brinfo"].(string) != brinfo {
+		return info, errors.New("user brinfo is different :" + platform + " / " + userid + " / " + brinfo)
 	}
 
 	updatetime, ok := found["lastupdate"].(int64)