From 18f23d9d3b3e923bc3bbb0d452813cf8715a0c03 Mon Sep 17 00:00:00 2001
From: 2dust <31833384+2dust@users.noreply.github.com>
Date: Tue, 13 Jan 2026 11:10:48 +0800
Subject: [PATCH] Bug fix

https://github.com/2dust/v2rayNG/issues/5151
---
 V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
index a1eb33e4..58d80fab 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
@@ -101,7 +101,7 @@ object Hysteria2Fmt : FmtBase() {
             Hysteria2Bean.TransportBean(
                 type = "udp",
                 udp = Hysteria2Bean.TransportBean.TransportUdpBean(
-                    hopInterval = (config.portHoppingInterval ?: "30") + "s"
+                    hopInterval = (config.portHoppingInterval?.takeIf { it.isNotEmpty() } ?: "30") + "s"
                 )
             )