diff --git a/autotests/CMakeLists.txt b/autotests/CMakeLists.txt
index 18dedada7..1ae30108f 100644
--- a/autotests/CMakeLists.txt
+++ b/autotests/CMakeLists.txt
@@ -58,3 +58,9 @@ ecm_add_test(
     LINK_LIBRARIES neochat Qt::Test
     TEST_NAME actionshandlertest
 )
+
+ecm_add_test(
+    windowcontrollertest.cpp
+    LINK_LIBRARIES neochat Qt::Test
+    TEST_NAME windowcontrollertest
+)
diff --git a/autotests/windowcontrollertest.cpp b/autotests/windowcontrollertest.cpp
new file mode 100644
index 000000000..3f760e539
--- /dev/null
+++ b/autotests/windowcontrollertest.cpp
@@ -0,0 +1,102 @@
+// SPDX-FileCopyrightText: 2023 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#include <QQmlApplicationEngine>
+#include <QTest>
+#include <QWindow>
+
+#include <KConfig>
+#include <KSharedConfig>
+#include <KWindowConfig>
+
+#include "windowcontroller.h"
+
+class WindowControllerTest : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void nullWindow();
+    void geometry();
+    void showAndRaise();
+    void toggle();
+
+    void cleanup();
+};
+
+// Basically don't crash when no window is set.
+void WindowControllerTest::nullWindow()
+{
+    auto &instance = WindowController::instance();
+    QCOMPARE(instance.window(), nullptr);
+
+    instance.restoreGeometry();
+    instance.saveGeometry();
+    instance.showAndRaiseWindow({});
+    instance.toggleWindow();
+}
+
+void WindowControllerTest::geometry()
+{
+    auto &instance = WindowController::instance();
+
+    QWindow window;
+    window.setGeometry(0, 0, 200, 200);
+    instance.setWindow(&window);
+    QCOMPARE(instance.window(), &window);
+
+    instance.saveGeometry();
+    const auto stateConfig = KSharedConfig::openStateConfig();
+    KConfigGroup windowGroup = stateConfig->group(QStringLiteral("Window"));
+    QCOMPARE(KWindowConfig::hasSavedWindowSize(windowGroup), true);
+
+    window.setGeometry(0, 0, 400, 400);
+    QCOMPARE(window.geometry(), QRect(0, 0, 400, 400));
+    instance.restoreGeometry();
+    QCOMPARE(window.geometry(), QRect(0, 0, 200, 200));
+}
+
+void WindowControllerTest::showAndRaise()
+{
+    auto &instance = WindowController::instance();
+    QWindow window;
+    instance.setWindow(&window);
+    QCOMPARE(window.isVisible(), false);
+
+    instance.showAndRaiseWindow({});
+    QCOMPARE(window.isVisible(), true);
+}
+
+void WindowControllerTest::cleanup()
+{
+    auto &instance = WindowController::instance();
+    instance.setWindow(nullptr);
+    QCOMPARE(instance.window(), nullptr);
+}
+
+void WindowControllerTest::toggle()
+{
+    auto &instance = WindowController::instance();
+    QWindow window;
+    instance.setWindow(&window);
+    QCOMPARE(window.isVisible(), false);
+    instance.toggleWindow();
+    QCOMPARE(window.isVisible(), true);
+    instance.toggleWindow();
+    QCOMPARE(window.isVisible(), false);
+
+    // A window is classed as visible by qt when minimized but to the user this is not visible.
+    // So in this case we expect to show it even though visibility is technically true.
+    window.setVisibility(QWindow::Minimized);
+    QCOMPARE(window.windowState(), Qt::WindowMinimized);
+    QCOMPARE(window.isVisible(), true);
+    instance.toggleWindow();
+    QCOMPARE(window.windowState(), Qt::WindowNoState);
+    QCOMPARE(window.isVisible(), true);
+    instance.toggleWindow();
+    QCOMPARE(window.windowState(), Qt::WindowNoState);
+    QCOMPARE(window.isVisible(), false);
+}
+
+QTEST_MAIN(WindowControllerTest)
+#include "windowcontrollertest.moc"
diff --git a/src/windowcontroller.cpp b/src/windowcontroller.cpp
index 97237d02c..b83cde861 100644
--- a/src/windowcontroller.cpp
+++ b/src/windowcontroller.cpp
@@ -56,6 +56,9 @@ void WindowController::saveGeometry()
 
 void WindowController::showAndRaiseWindow(const QString &startupId)
 {
+    if (m_window == nullptr) {
+        return;
+    }
     if (!m_window->isVisible()) {
         m_window->show();
         restoreGeometry();
@@ -104,6 +107,9 @@ void WindowController::setBlur(QQuickItem *item, bool blur)
 
 void WindowController::toggleWindow()
 {
+    if (m_window == nullptr) {
+        return;
+    }
     if (window()->isVisible()) {
         if (window()->windowStates() & Qt::WindowMinimized) {
             window()->showNormal();