diff --git a/Telegram/SourceFiles/boxes/peers/edit_peer_permissions_box.cpp b/Telegram/SourceFiles/boxes/peers/edit_peer_permissions_box.cpp
index bec94468e..ca3670d8a 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_peer_permissions_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_peer_permissions_box.cpp
@@ -292,7 +292,7 @@ ChatRestrictions FixDependentRestrictions(ChatRestrictions restrictions) {
 
 	// Apply the strictest.
 	const auto fixOne = [&] {
-		for (const auto [first, second] : dependencies) {
+		for (const auto &[first, second] : dependencies) {
 			if ((restrictions & second) && !(restrictions & first)) {
 				restrictions |= first;
 				return true;
diff --git a/Telegram/SourceFiles/core/crash_report_window.cpp b/Telegram/SourceFiles/core/crash_report_window.cpp
index 74f96d773..b50b43e90 100644
--- a/Telegram/SourceFiles/core/crash_report_window.cpp
+++ b/Telegram/SourceFiles/core/crash_report_window.cpp
@@ -126,7 +126,7 @@ PreLaunchLog::PreLaunchLog(QWidget *parent) : QTextEdit(parent) {
 	setPalette(p);
 
 	setReadOnly(true);
-	setFrameStyle(QFrame::NoFrame | QFrame::Plain);
+	setFrameStyle(int(QFrame::NoFrame) | QFrame::Plain);
 	viewport()->setAutoFillBackground(false);
 	setContentsMargins(0, 0, 0, 0);
 	document()->setDocumentMargin(0);
diff --git a/Telegram/SourceFiles/editor/photo_editor_controls.cpp b/Telegram/SourceFiles/editor/photo_editor_controls.cpp
index ce7ac5ab3..a82d92d4b 100644
--- a/Telegram/SourceFiles/editor/photo_editor_controls.cpp
+++ b/Telegram/SourceFiles/editor/photo_editor_controls.cpp
@@ -127,11 +127,11 @@ ButtonBar::ButtonBar(
 		if (children.empty()) {
 			return;
 		}
-		const auto widgets = ranges::view::all(
+		const auto widgets = ranges::views::all(
 			children
-		) | ranges::view::filter([](not_null<const QObject*> object) {
+		) | ranges::views::filter([](not_null<const QObject*> object) {
 			return object->isWidgetType();
-		}) | ranges::view::transform([](not_null<QObject*> object) {
+		}) | ranges::views::transform([](not_null<QObject*> object) {
 			return static_cast<Ui::RpWidget*>(object.get());
 		}) | ranges::to_vector;
 
diff --git a/Telegram/SourceFiles/history/history_inner_widget.cpp b/Telegram/SourceFiles/history/history_inner_widget.cpp
index c94c82e94..101122bc0 100644
--- a/Telegram/SourceFiles/history/history_inner_widget.cpp
+++ b/Telegram/SourceFiles/history/history_inner_widget.cpp
@@ -2678,7 +2678,7 @@ MessageIdsList HistoryInner::getSelectedItems() const {
 		return selected.first->fullId();
 	}) | to_vector;
 
-	result |= actions::sort(ordered_less{}, [](const FullMsgId &msgId) {
+	result |= actions::sort(less{}, [](const FullMsgId &msgId) {
 		return msgId.channel ? msgId.msg : (msgId.msg - ServerMaxMsgId);
 	});
 	return result;
diff --git a/Telegram/SourceFiles/history/view/history_view_service_message.cpp b/Telegram/SourceFiles/history/view/history_view_service_message.cpp
index 140f75850..8b73e2703 100644
--- a/Telegram/SourceFiles/history/view/history_view_service_message.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_service_message.cpp
@@ -136,7 +136,7 @@ int paintBubbleSide(
 		CornerVerticalSide side,
 		const style::color &bg) {
 	if (style == SideStyle::Rounded) {
-		const auto corner = (NormalMask * MaskMultiplier) | side;
+		const auto corner = (int(NormalMask) * MaskMultiplier) | side;
 		auto left = circleCorner(corner | CornerLeft, bg);
 		int leftWidth = left.width() / cIntRetinaFactor();
 		p.drawPixmap(x, y, left);
@@ -155,7 +155,7 @@ int paintBubbleSide(
 		return cornerHeight;
 	} else if (style == SideStyle::Inverted) {
 		// CornerLeft and CornerRight are inverted for SideStyle::Inverted sprites.
-		const auto corner = (InvertedMask * MaskMultiplier) | side;
+		const auto corner = (int(InvertedMask) * MaskMultiplier) | side;
 		auto left = circleCorner(corner | CornerRight, bg);
 		int leftWidth = left.width() / cIntRetinaFactor();
 		p.drawPixmap(x - leftWidth, y, left);
diff --git a/Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp b/Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp
index e60740b63..26bfb12ea 100644
--- a/Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp
@@ -512,7 +512,7 @@ void OverlayWidget::RendererGL::validateControls() {
 	};
 	auto maxWidth = 0;
 	auto fullHeight = 0;
-	for (const auto meta : metas) {
+	for (const auto &meta : metas) {
 		maxWidth = std::max(meta.icon->width(), maxWidth);
 		fullHeight += meta.icon->height();
 	}
@@ -525,7 +525,7 @@ void OverlayWidget::RendererGL::validateControls() {
 		auto p = QPainter(&image);
 		auto index = 0;
 		auto height = 0;
-		for (const auto meta : metas) {
+		for (const auto &meta : metas) {
 			meta.icon->paint(p, 0, height, maxWidth);
 			_controlsTextures[index++] = QRect(
 				QPoint(0, height) * _factor,
diff --git a/Telegram/SourceFiles/media/view/media_view_pip_opengl.cpp b/Telegram/SourceFiles/media/view/media_view_pip_opengl.cpp
index a04f32b60..876fc9009 100644
--- a/Telegram/SourceFiles/media/view/media_view_pip_opengl.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_pip_opengl.cpp
@@ -636,7 +636,7 @@ void Pip::RendererGL::validateControls() {
 	};
 	auto maxWidth = 0;
 	auto fullHeight = 0;
-	for (const auto meta : metas) {
+	for (const auto &meta : metas) {
 		Assert(meta.icon->size() == meta.iconOver->size());
 		maxWidth = std::max(meta.icon->width(), maxWidth);
 		fullHeight += 2 * meta.icon->height();
@@ -657,7 +657,7 @@ void Pip::RendererGL::validateControls() {
 				icon->size() * _factor);
 			height += icon->height();
 		};
-		for (const auto meta : metas) {
+		for (const auto &meta : metas) {
 			paint(meta.icon);
 			paint(meta.iconOver);
 		}
diff --git a/Telegram/SourceFiles/platform/linux/launcher_linux.h b/Telegram/SourceFiles/platform/linux/launcher_linux.h
index 782c2c12d..36625a36a 100644
--- a/Telegram/SourceFiles/platform/linux/launcher_linux.h
+++ b/Telegram/SourceFiles/platform/linux/launcher_linux.h
@@ -15,7 +15,7 @@ class Launcher : public Core::Launcher {
 public:
 	Launcher(int argc, char *argv[]);
 
-	int exec();
+	int exec() override;
 
 private:
 	void initHook() override;
diff --git a/Telegram/cmake/lib_tgcalls.cmake b/Telegram/cmake/lib_tgcalls.cmake
index 9bb2c7bd8..bf1459ff7 100644
--- a/Telegram/cmake/lib_tgcalls.cmake
+++ b/Telegram/cmake/lib_tgcalls.cmake
@@ -211,6 +211,14 @@ elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
     )
 endif()
 
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    target_compile_options(lib_tgcalls
+    PRIVATE
+        -Wno-deprecated-volatile
+        -Wno-ambiguous-reversed-operator
+    )
+endif()
+
 remove_target_sources(lib_tgcalls ${tgcalls_loc}
     platform/android/AndroidContext.cpp
     platform/android/AndroidContext.h