diff --git a/libdiscover/backends/PackageKitBackend/PackageKitUpdater.cpp b/libdiscover/backends/PackageKitBackend/PackageKitUpdater.cpp
--- a/libdiscover/backends/PackageKitBackend/PackageKitUpdater.cpp
+++ b/libdiscover/backends/PackageKitBackend/PackageKitUpdater.cpp
@@ -198,6 +198,7 @@
     if (qEnvironmentVariableIsSet("PK_OFFLINE_UPDATE"))
 #ifdef PKQT_1_0
         PackageKit::Daemon::global()->offline()->trigger(PackageKit::Offline::ActionReboot);
+        Q_EMIT passiveMessage(i18n("Please restart the computer to finish the installation"));
 #else
         qWarning() << "PK_OFFLINE_UPDATE is set but discover was built against an old version of PackageKitQt that didn't support offline updates";
 #endif
diff --git a/notifier/DiscoverNotifier.cpp b/notifier/DiscoverNotifier.cpp
--- a/notifier/DiscoverNotifier.cpp
+++ b/notifier/DiscoverNotifier.cpp
@@ -180,7 +180,7 @@
 {
     KNotification *notification = new KNotification(QStringLiteral("notification"), KNotification::Persistent | KNotification::DefaultEvent);
     notification->setIconName(QStringLiteral("system-software-update"));
-    notification->setActions(QStringList{QLatin1String("Restart")});
+    notification->setActions(QStringList{i18nc("@action:button", "Restart")});
     notification->setTitle(i18n("Restart is required"));
     notification->setText(i18n("The system needs to be restarted for the updates to take effect."));
 
@@ -199,7 +199,7 @@
 {
     KNotification *notification = new KNotification(QStringLiteral("distupgrade-notification"), KNotification::Persistent | KNotification::DefaultEvent);
     notification->setIconName(QStringLiteral("system-software-update"));
-    notification->setActions(QStringList{QLatin1String("Upgrade")});
+    notification->setActions(QStringList{i18nc("@action:button", "Upgrade")});
     notification->setTitle(i18n("Upgrade available"));
     notification->setText(i18n("New version: %1", action->description()));