diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index 612f3024c..10a57e408 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -2460,4 +2460,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "ktg_settings_recent_stickers_limit#other" = "Recent stickers: show {count} stickers";
 "ktg_settings_recent_stickers_limit_none" = "Recent stickers: hide all";
 
+"ktg_filters_default" = "Default folder";
+
 // Keys finished
diff --git a/Telegram/Resources/langs/rewrites/ru.json b/Telegram/Resources/langs/rewrites/ru.json
index 09ab40c1a..7575b175f 100644
--- a/Telegram/Resources/langs/rewrites/ru.json
+++ b/Telegram/Resources/langs/rewrites/ru.json
@@ -97,5 +97,6 @@
 		"many": "Недавние стикеры: показывать {count} стикеров",
 		"other": "Недавние стикеры: показывать {count} стикеров"
 	},
-	"ktg_settings_recent_stickers_limit_none": "Недавние стикеры: скрыть все"
+	"ktg_settings_recent_stickers_limit_none": "Недавние стикеры: скрыть все",
+	"ktg_filters_default": "Папка по умолчанию"
 }
diff --git a/Telegram/SourceFiles/boxes/filters/edit_filter_box.cpp b/Telegram/SourceFiles/boxes/filters/edit_filter_box.cpp
index f18f53c34..0955fd11d 100644
--- a/Telegram/SourceFiles/boxes/filters/edit_filter_box.cpp
+++ b/Telegram/SourceFiles/boxes/filters/edit_filter_box.cpp
@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "chat_helpers/emoji_suggestions_widget.h"
 #include "ui/layers/generic_box.h"
 #include "ui/text/text_utilities.h"
+#include "ui/widgets/checkbox.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/input_fields.h"
 #include "ui/effects/panel_animation.h"
@@ -19,6 +20,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_chat_filters.h"
 #include "data/data_peer.h"
 #include "data/data_session.h"
+#include "core/kotato_settings.h"
 #include "settings/settings_common.h"
 #include "base/event_filter.h"
 #include "lang/lang_keys.h"
@@ -539,6 +541,19 @@ void EditFilterBox(
 		name->setFocusFast();
 	});
 
+	const auto isCurrent = filter.id() == cDefaultFilterId();
+	const auto checkboxDefault = content->add(
+		object_ptr<Ui::Checkbox>(
+			box,
+			tr::ktg_filters_default(tr::now),
+			(creating ? false : isCurrent),
+			st::defaultBoxCheckbox),
+		style::margins(
+			st::boxPadding.left(),
+			st::boxPadding.bottom(),
+			st::boxPadding.right(),
+			st::boxPadding.bottom()));
+
 	AddSkip(content);
 	AddDivider(content);
 	AddSkip(content);
@@ -618,6 +633,7 @@ void EditFilterBox(
 	const auto save = [=] {
 		const auto title = name->getLastText().trimmed();
 		const auto rules = data->current();
+		const auto checked = checkboxDefault && checkboxDefault->checked();
 		const auto result = Data::ChatFilter(
 			rules.id(),
 			title,
@@ -625,7 +641,8 @@ void EditFilterBox(
 			rules.flags(),
 			rules.always(),
 			rules.pinned(),
-			rules.never());
+			rules.never(),
+			checked);
 		if (title.isEmpty()) {
 			name->showError();
 			return;
@@ -670,6 +687,12 @@ void EditExistingFilter(
 			MTP_int(id),
 			tl
 		)).send();
+		const auto isCurrentDefault = result.id() == cDefaultFilterId();
+		if ((isCurrentDefault && !result.isDefault())
+			|| (!isCurrentDefault && result.isDefault())) {
+			cSetDefaultFilterId(result.isDefault() ? result.id() : 0);
+			KotatoSettings::Write();
+		}
 	};
 	window->window().show(Box(
 		EditFilterBox,
diff --git a/Telegram/SourceFiles/data/data_chat_filters.cpp b/Telegram/SourceFiles/data/data_chat_filters.cpp
index b8ed5ac08..ad9606429 100644
--- a/Telegram/SourceFiles/data/data_chat_filters.cpp
+++ b/Telegram/SourceFiles/data/data_chat_filters.cpp
@@ -29,6 +29,9 @@ constexpr auto kLoadExceptionsPerRequest = 100;
 
 } // namespace
 
+ChatFilter::ChatFilter(FilterId id) : _id(id) {
+}
+
 ChatFilter::ChatFilter(
 	FilterId id,
 	const QString &title,
@@ -36,14 +39,16 @@ ChatFilter::ChatFilter(
 	Flags flags,
 	base::flat_set<not_null<History*>> always,
 	std::vector<not_null<History*>> pinned,
-	base::flat_set<not_null<History*>> never)
+	base::flat_set<not_null<History*>> never,
+	bool isDefault)
 : _id(id)
 , _title(title)
 , _iconEmoji(iconEmoji)
 , _always(std::move(always))
 , _pinned(std::move(pinned))
 , _never(std::move(never))
-, _flags(flags) {
+, _flags(flags)
+, _isDefault(isDefault) {
 }
 
 ChatFilter ChatFilter::FromTL(
@@ -102,7 +107,8 @@ ChatFilter ChatFilter::FromTL(
 			flags,
 			std::move(list),
 			std::move(pinned),
-			{ never.begin(), never.end() });
+			{ never.begin(), never.end() },
+			(data.vid().v == cDefaultFilterId()));
 	});
 }
 
@@ -154,6 +160,10 @@ QString ChatFilter::title() const {
 	return _title;
 }
 
+bool ChatFilter::isDefault() const {
+	return _isDefault;
+}
+
 QString ChatFilter::iconEmoji() const {
 	return _iconEmoji;
 }
@@ -465,7 +475,8 @@ const ChatFilter &ChatFilters::applyUpdatedPinned(
 		i->flags(),
 		std::move(always),
 		std::move(pinned),
-		i->never()));
+		i->never(),
+		(id == cDefaultFilterId())));
 	return *i;
 }
 
diff --git a/Telegram/SourceFiles/data/data_chat_filters.h b/Telegram/SourceFiles/data/data_chat_filters.h
index 7ad560857..fa591c16e 100644
--- a/Telegram/SourceFiles/data/data_chat_filters.h
+++ b/Telegram/SourceFiles/data/data_chat_filters.h
@@ -38,6 +38,7 @@ public:
 	static constexpr int kPinnedLimit = 100;
 
 	ChatFilter() = default;
+	ChatFilter(FilterId id);
 	ChatFilter(
 		FilterId id,
 		const QString &title,
@@ -45,7 +46,8 @@ public:
 		Flags flags,
 		base::flat_set<not_null<History*>> always,
 		std::vector<not_null<History*>> pinned,
-		base::flat_set<not_null<History*>> never);
+		base::flat_set<not_null<History*>> never,
+		bool isDefault = false);
 
 	[[nodiscard]] static ChatFilter FromTL(
 		const MTPDialogFilter &data,
@@ -54,6 +56,7 @@ public:
 
 	[[nodiscard]] FilterId id() const;
 	[[nodiscard]] QString title() const;
+	[[nodiscard]] bool isDefault() const;
 	[[nodiscard]] QString iconEmoji() const;
 	[[nodiscard]] Flags flags() const;
 	[[nodiscard]] const base::flat_set<not_null<History*>> &always() const;
@@ -70,6 +73,7 @@ private:
 	std::vector<not_null<History*>> _pinned;
 	base::flat_set<not_null<History*>> _never;
 	Flags _flags;
+	bool _isDefault = false;
 
 };
 
diff --git a/Telegram/SourceFiles/settings/settings_folders.cpp b/Telegram/SourceFiles/settings/settings_folders.cpp
index 9331f89a7..5fc492243 100644
--- a/Telegram/SourceFiles/settings/settings_folders.cpp
+++ b/Telegram/SourceFiles/settings/settings_folders.cpp
@@ -24,6 +24,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/slide_wrap.h"
 #include "ui/painter.h"
 #include "ui/filter_icons.h"
+#include "core/kotato_settings.h"
 #include "settings/settings_common.h"
 #include "lang/lang_keys.h"
 #include "apiwrap.h"
@@ -39,6 +40,8 @@ namespace {
 
 constexpr auto kRefreshSuggestedTimeout = 7200 * crl::time(1000);
 constexpr auto kFiltersLimit = 10;
+auto currentDefaultRemoved = false;
+auto localNewFilterId = kFiltersLimit;
 
 using Flag = Data::ChatFilter::Flag;
 using Flags = Data::ChatFilter::Flags;
@@ -309,6 +312,9 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 		not_null<Window::SessionController*> controller,
 		not_null<Ui::VerticalLayout*> container) {
 	auto &lifetime = container->lifetime();
+	const auto currentDefaultId = cDefaultFilterId();
+	localNewFilterId = kFiltersLimit;
+	currentDefaultRemoved = false;
 
 	const auto session = &controller->session();
 	AddSkip(container, st::settingsSectionSkip);
@@ -337,6 +343,9 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 		button->removeRequests(
 		) | rpl::start_with_next([=] {
 			button->setRemoved(true);
+			if (find(button)->filter.id() == cDefaultFilterId()) {
+				currentDefaultRemoved = true;
+			}
 			find(button)->removed = true;
 		}, button->lifetime());
 		button->restoreRequests(
@@ -344,6 +353,9 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 			if (showLimitReached()) {
 				return;
 			}
+			if (find(button)->filter.id() == cDefaultFilterId()) {
+				currentDefaultRemoved = false;
+			}
 			button->setRemoved(false);
 			find(button)->removed = false;
 		}, button->lifetime());
@@ -354,6 +366,11 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 			}
 			const auto doneCallback = [=](const Data::ChatFilter &result) {
 				find(button)->filter = result;
+				const auto isCurrentDefault = result.id() == cDefaultFilterId();
+				if ((isCurrentDefault && !result.isDefault())
+					|| (!isCurrentDefault && result.isDefault())) {
+					cSetDefaultFilterId(result.isDefault() ? result.id() : 0);
+				}
 				button->updateData(result);
 			};
 			controller->window().show(Box(
@@ -414,12 +431,15 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 			return;
 		}
 		const auto doneCallback = [=](const Data::ChatFilter &result) {
+			if (result.isDefault()) {
+				cSetDefaultFilterId(result.id());
+			}
 			addFilter(result);
 		};
 		controller->window().show(Box(
 			EditFilterBox,
 			controller,
-			Data::ChatFilter(),
+			Data::ChatFilter(++localNewFilterId),
 			crl::guard(container, doneCallback)));
 	});
 	AddSkip(container);
@@ -508,6 +528,9 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 				continue;
 			} else if (!ranges::contains(list, id, &Data::ChatFilter::id)) {
 				result.emplace(row.button, chooseNextId());
+				if (cDefaultFilterId() == id) {
+					cSetDefaultFilterId(localId);
+				}
 			}
 		}
 		return result;
@@ -565,6 +588,13 @@ void FilterRowButton::paintEvent(QPaintEvent *e) {
 		if (!order.empty() && !addRequests.empty()) {
 			realFilters.saveOrder(order, previousId);
 		}
+		if (currentDefaultRemoved) {
+			cSetDefaultFilterId(0);
+			controller->setActiveChatsFilter(0);
+		}
+		if (currentDefaultId != cDefaultFilterId()) {
+			KotatoSettings::Write();
+		}
 	};
 }
 
diff --git a/Telegram/SourceFiles/window/window_filters_menu.cpp b/Telegram/SourceFiles/window/window_filters_menu.cpp
index 05510ee64..ef562932a 100644
--- a/Telegram/SourceFiles/window/window_filters_menu.cpp
+++ b/Telegram/SourceFiles/window/window_filters_menu.cpp
@@ -20,6 +20,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/popup_menu.h"
 #include "boxes/confirm_box.h"
 #include "boxes/filters/edit_filter_box.h"
+#include "core/kotato_settings.h"
 #include "settings/settings_common.h"
 #include "api/api_chat_filters.h"
 #include "apiwrap.h"
@@ -292,6 +293,13 @@ void FiltersMenu::remove(FilterId id) {
 		MTP_int(id),
 		MTPDialogFilter()
 	)).send();
+	if (id == cDefaultFilterId()) {
+		cSetDefaultFilterId(0);
+		KotatoSettings::Write();
+		if (id == _session->activeChatsFilterCurrent()) {
+			_session->setActiveChatsFilter(0);
+		}
+	}
 }
 
 void FiltersMenu::applyReorder(