diff --git a/core/backends/lan/lanlinkprovider.h b/core/backends/lan/lanlinkprovider.h
index 08b3b07bc..53522dafa 100644
--- a/core/backends/lan/lanlinkprovider.h
+++ b/core/backends/lan/lanlinkprovider.h
@@ -7,17 +7,12 @@
 #ifndef LANLINKPROVIDER_H
 #define LANLINKPROVIDER_H
 
+#include <QNetworkInformation>
 #include <QObject>
 #include <QSslSocket>
 #include <QTcpServer>
 #include <QTimer>
 #include <QUdpSocket>
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-#include <QNetworkConfigurationManager>
-#include <QNetworkSession>
-#else
-#include <QNetworkInformation>
-#endif
 
 #include "backends/linkprovider.h"
 #include "kdeconnectcore_export.h"
diff --git a/kcm/kcm.h b/kcm/kcm.h
index 6e19b0895..7716a8255 100644
--- a/kcm/kcm.h
+++ b/kcm/kcm.h
@@ -26,13 +26,6 @@ public:
     KdeConnectKcm(QObject *parent, const QVariantList &);
     ~KdeConnectKcm() override;
 
-#if KCONFIGWIDGETS_VERSION < QT_VERSION_CHECK(5, 105, 0)
-    QWidget *widget()
-    {
-        return this;
-    }
-#endif
-
 private:
     void save() override;
 
diff --git a/kcmplugin/kdeconnectpluginkcm.h b/kcmplugin/kdeconnectpluginkcm.h
index 2559a61a1..6f6bb1120 100644
--- a/kcmplugin/kdeconnectpluginkcm.h
+++ b/kcmplugin/kdeconnectpluginkcm.h
@@ -40,13 +40,6 @@ public:
         return m_config;
     }
 
-#if KCONFIGWIDGETS_VERSION < QT_VERSION_CHECK(5, 105, 0)
-    QWidget *widget()
-    {
-        return this;
-    }
-#endif
-
 private:
     const QString m_deviceId;
     const QString m_pluginName;
diff --git a/plugins/mousepad/x11remoteinput.cpp b/plugins/mousepad/x11remoteinput.cpp
index 75138e0ff..9532dca37 100644
--- a/plugins/mousepad/x11remoteinput.cpp
+++ b/plugins/mousepad/x11remoteinput.cpp
@@ -9,11 +9,7 @@
 
 #include <QCursor>
 #include <QDebug>
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-#include <QX11Info>
-#else
 #include <private/qtx11extras_p.h>
-#endif
 
 #include <X11/extensions/XTest.h>
 #include <X11/keysym.h>
diff --git a/plugins/notifications/notificationsplugin.cpp b/plugins/notifications/notificationsplugin.cpp
index 07f0d6d94..c52556d87 100644
--- a/plugins/notifications/notificationsplugin.cpp
+++ b/plugins/notifications/notificationsplugin.cpp
@@ -13,12 +13,8 @@
 #include <KPluginFactory>
 #if !defined(Q_OS_WIN) && !defined(Q_OS_MAC)
 #include <KStartupInfo>
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-#include <QX11Info>
-#else
 #include <private/qtx11extras_p.h>
 #endif
-#endif
 
 K_PLUGIN_CLASS_WITH_JSON(NotificationsPlugin, "kdeconnect_notifications.json")
 
diff --git a/plugins/sendnotifications/notificationslistener.cpp b/plugins/sendnotifications/notificationslistener.cpp
index e873c170f..2306a14d1 100644
--- a/plugins/sendnotifications/notificationslistener.cpp
+++ b/plugins/sendnotifications/notificationslistener.cpp
@@ -22,10 +22,6 @@ NotificationsListener::NotificationsListener(KdeConnectPlugin *aPlugin)
     : QObject(aPlugin)
     , m_plugin(aPlugin)
 {
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    qRegisterMetaTypeStreamOperators<NotifyingApplication>("NotifyingApplication");
-#endif
-
     setTranslatedAppName();
     loadApplications();
 
diff --git a/plugins/sendnotifications/sendnotifications_config.cpp b/plugins/sendnotifications/sendnotifications_config.cpp
index f4573e01c..4a7c14592 100644
--- a/plugins/sendnotifications/sendnotifications_config.cpp
+++ b/plugins/sendnotifications/sendnotifications_config.cpp
@@ -16,10 +16,6 @@ SendNotificationsConfig::SendNotificationsConfig(QObject *parent, const KPluginM
     : KdeConnectPluginKcm(parent, data, args)
     , appModel(new NotifyingApplicationModel)
 {
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    qRegisterMetaTypeStreamOperators<NotifyingApplication>("NotifyingApplication");
-#endif
-
     m_ui.setupUi(widget());
     m_ui.appList->setIconSize(QSize(32, 32));