diff --git a/code/espurna/homeassistant.cpp b/code/espurna/homeassistant.cpp
index 132a18ab..0358bcda 100644
--- a/code/espurna/homeassistant.cpp
+++ b/code/espurna/homeassistant.cpp
@@ -599,8 +599,9 @@ bool heartbeat(heartbeat::Mask mask) {
         String message;
         root.printTo(message);
 
+        static const auto topic = StringView(Topic).toString();
         mqttSendRaw(
-            mqttTopic(Topic).c_str(),
+            mqttTopic(topic).c_str(),
             message.c_str(), false);
     }