diff --git a/src/controllers/highlights/ConfigureDialog.cpp b/src/controllers/highlights/ConfigureDialog.cpp
index 2e6c95442..d06571385 100644
--- a/src/controllers/highlights/ConfigureDialog.cpp
+++ b/src/controllers/highlights/ConfigureDialog.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "controllers/highlights/ConfigureDialog.hpp"
 
 #include "Application.hpp"
diff --git a/src/controllers/highlights/ConfigureDialog.hpp b/src/controllers/highlights/ConfigureDialog.hpp
index e6114b2c9..a17397864 100644
--- a/src/controllers/highlights/ConfigureDialog.hpp
+++ b/src/controllers/highlights/ConfigureDialog.hpp
@@ -1,15 +1,14 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "controllers/highlights/types/All.hpp"
-#include "util/DisplayBadge.hpp"
 #include "widgets/BasePopup.hpp"
 
-#include <qtmetamacros.h>
 #include <QWidget>
 
-#include <memory>
-#include <optional>
-
 namespace chatterino::highlights {
 
 class ConfigureDialog : public BasePopup
diff --git a/src/controllers/highlights/Model.cpp b/src/controllers/highlights/Model.cpp
index dd9589cd2..8b5f8d1d4 100644
--- a/src/controllers/highlights/Model.cpp
+++ b/src/controllers/highlights/Model.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "controllers/highlights/Model.hpp"
 
 #include "Application.hpp"
diff --git a/src/controllers/highlights/Model.hpp b/src/controllers/highlights/Model.hpp
index 17a452ab7..744c12211 100644
--- a/src/controllers/highlights/Model.hpp
+++ b/src/controllers/highlights/Model.hpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "common/SignalVectorModel.hpp"
diff --git a/src/widgets/settingspages/HighlightingWidget.cpp b/src/widgets/settingspages/HighlightingWidget.cpp
index 8a1f74068..dca2207c4 100644
--- a/src/widgets/settingspages/HighlightingWidget.cpp
+++ b/src/widgets/settingspages/HighlightingWidget.cpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "widgets/settingspages/HighlightingWidget.hpp"
 
 #include "common/QLogging.hpp"
diff --git a/src/widgets/settingspages/HighlightingWidget.hpp b/src/widgets/settingspages/HighlightingWidget.hpp
index 9ded23a45..de8a1333e 100644
--- a/src/widgets/settingspages/HighlightingWidget.hpp
+++ b/src/widgets/settingspages/HighlightingWidget.hpp
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "widgets/BaseWidget.hpp"