From 52486ed5b4503d7ddbb9aa94e6a848e7fa7771f5 Mon Sep 17 00:00:00 2001
From: MichaelDvP <github@mdvp.de>
Date: Mon, 10 Aug 2026 10:11:01 +0200
Subject: [PATCH] HA val_tpl for undefined boottime `None`

---
 src/core/mqtt.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/mqtt.cpp b/src/core/mqtt.cpp
index 2ac2349f3..d31e3086e 100644
--- a/src/core/mqtt.cpp
+++ b/src/core/mqtt.cpp
@@ -1136,7 +1136,7 @@ bool Mqtt::publish_ha_sensor_config(uint8_t               type,        // EMSdev
                 doc["val_tpl"] = val_tpl;
             } else if (uom == DeviceValueUOM::UPTIME) {
                 // uptime
-                doc["val_tpl"] = (std::string) "{{" + val_obj + " if " + val_cond + " else '' }}";
+                doc["val_tpl"] = (std::string) "{{" + val_obj + " if " + val_cond + " else 'None' }}";
             } else {
                 // default
                 doc["val_tpl"] = (std::string) "{{" + val_obj + " if " + val_cond + " else " + sample_val + "}}";