diff --git a/src/server/game/mod/base/Base.go b/src/server/game/mod/base/Base.go
index 91ef3e6a..a060a802 100644
--- a/src/server/game/mod/base/Base.go
+++ b/src/server/game/mod/base/Base.go
@@ -69,6 +69,9 @@ func (b *Base) Login() int64 {
 		b.LoginDay += 1
 	}
 	logoutDuration := Now - b.LogoutTime
+	if b.LogoutTime == 0 {
+		logoutDuration = 0
+	}
 	b.LoginTime = Now
 	b.LogoutTime = 0
 	return logoutDuration