diff --git a/Config.h b/Config.h
index 24619df2..70b30b32 100644
--- a/Config.h
+++ b/Config.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#define NUKI_HUB_VERSION "8.26"
+#define NUKI_HUB_VERSION "8.27-pre-1"
 
 #define MQTT_QOS_LEVEL 1
 #define MQTT_CLEAN_SESSIONS false
diff --git a/Network.cpp b/Network.cpp
index 8158e9f1..8bcb0757 100644
--- a/Network.cpp
+++ b/Network.cpp
@@ -712,7 +712,7 @@ void Network::publishHASSConfig(char* deviceType, const char* baseTopic, char* n
         json["dev"]["mdl"] = deviceType;
         json["dev"]["name"] = name;
         json["~"] = baseTopic;
-        json["name"] = null;
+        json["name"] = nullptr;
         json["unique_id"] = String(uidString) + "_lock";
         json["cmd_t"] = String("~") + String(mqtt_topic_lock_action);
         json["pl_lock"] = lockAction;