diff --git a/gui/include/discoverymanager.h b/gui/include/discoverymanager.h
index c99e0c9..f2b09de 100644
--- a/gui/include/discoverymanager.h
+++ b/gui/include/discoverymanager.h
@@ -18,6 +18,8 @@
 #ifndef CHIAKI_DISCOVERYMANAGER_H
 #define CHIAKI_DISCOVERYMANAGER_H
 
+#include "host.h"
+
 #include <QObject>
 #include <QList>
 
@@ -30,6 +32,8 @@ struct DiscoveryHost
 #define STRING_MEMBER(name) QString name;
 	CHIAKI_DISCOVERY_HOST_STRING_FOREACH(STRING_MEMBER)
 #undef STRING_MEMBER
+
+	HostMAC GetHostMAC() const;
 };
 
 Q_DECLARE_METATYPE(DiscoveryHost)
diff --git a/gui/include/host.h b/gui/include/host.h
index 4abd3ae..0c0adcc 100644
--- a/gui/include/host.h
+++ b/gui/include/host.h
@@ -32,6 +32,7 @@ class HostMAC
 		HostMAC()								{ memset(mac, 0, sizeof(mac)); }
 		explicit HostMAC(const uint8_t mac[6])	{ memcpy(this->mac, mac, sizeof(this->mac)); }
 		const uint8_t *GetMAC() const			{ return mac; }
+		QString ToString() const				{ return QByteArray((const char *)mac, sizeof(mac)).toHex(); }
 };
 
 static bool operator==(const HostMAC &a, const HostMAC &b) { return memcmp(a.GetMAC(), b.GetMAC(), 6) == 0; }
diff --git a/gui/src/discoverymanager.cpp b/gui/src/discoverymanager.cpp
index 0e5b289..00f4585 100644
--- a/gui/src/discoverymanager.cpp
+++ b/gui/src/discoverymanager.cpp
@@ -25,6 +25,14 @@
 #define HOSTS_MAX	16
 #define DROP_PINGS	3
 
+HostMAC DiscoveryHost::GetHostMAC() const
+{
+	QByteArray data = QByteArray::fromHex(host_id.toUtf8());
+	if(data.size() != 6)
+		return HostMAC();
+	return HostMAC((uint8_t *)data.constData());
+}
+
 static void DiscoveryServiceHostsCallback(ChiakiDiscoveryHost *hosts, size_t hosts_count, void *user);
 
 DiscoveryManager::DiscoveryManager(QObject *parent) : QObject(parent)
diff --git a/gui/src/serveritemwidget.cpp b/gui/src/serveritemwidget.cpp
index 6f44a22..9b8d8a6 100644
--- a/gui/src/serveritemwidget.cpp
+++ b/gui/src/serveritemwidget.cpp
@@ -72,7 +72,7 @@ void ServerItemWidget::Update(const DisplayServer &display_server)
 		icon_widget->SetState(display_server.discovery_host.state);
 		top_label->setText(tr("%1\nID: %2\nAddress: %3").arg(
 				display_server.discovery_host.host_name,
-				display_server.discovery_host.host_id,
+				display_server.discovery_host.GetHostMAC().ToString(),
 				display_server.discovery_host.host_addr));
 		bottom_label->setText(tr("State: %1").arg(chiaki_discovery_host_state_string(display_server.discovery_host.state)));
 	}