diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index da47b0efd..cffa80266 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -1294,7 +1294,8 @@ void ApiWrap::markContentsRead(
 		QVector<MTPint>>();
 	markedIds.reserve(items.size());
 	for (const auto &item : items) {
-		if (!item->markContentsRead() || !item->isRegular()) {
+		if (!item->markContentsRead() || !item->isRegular() || true) {
+			AssertIsDebug();
 			continue;
 		}
 		if (const auto channel = item->history()->peer->asChannel()) {
diff --git a/Telegram/SourceFiles/data/data_message_reactions.cpp b/Telegram/SourceFiles/data/data_message_reactions.cpp
index f5658abb1..a05a32ae0 100644
--- a/Telegram/SourceFiles/data/data_message_reactions.cpp
+++ b/Telegram/SourceFiles/data/data_message_reactions.cpp
@@ -595,6 +595,24 @@ bool MessageReactions::empty() const {
 	return _list.empty();
 }
 
+QString MessageReactions::findUnread() const {
+	for (auto &[emoji, list] : _recent) {
+		const auto i = ranges::find(list, true, &RecentReaction::unread);
+		if (i != end(list)) {
+			return emoji;
+		}
+	}
+	return QString();
+}
+
+void MessageReactions::markRead() {
+	for (auto &[emoji, list] : _recent) {
+		for (auto &reaction : list) {
+			reaction.unread = false;
+		}
+	}
+}
+
 QString MessageReactions::chosen() const {
 	return _chosen;
 }
diff --git a/Telegram/SourceFiles/data/data_message_reactions.h b/Telegram/SourceFiles/data/data_message_reactions.h
index 50935f531..44a6776e7 100644
--- a/Telegram/SourceFiles/data/data_message_reactions.h
+++ b/Telegram/SourceFiles/data/data_message_reactions.h
@@ -155,6 +155,9 @@ public:
 	[[nodiscard]] QString chosen() const;
 	[[nodiscard]] bool empty() const;
 
+	[[nodiscard]] QString findUnread() const;
+	void markRead();
+
 private:
 	const not_null<HistoryItem*> _item;
 
diff --git a/Telegram/SourceFiles/data/data_types.h b/Telegram/SourceFiles/data/data_types.h
index 77e42ae9a..cfd8855cf 100644
--- a/Telegram/SourceFiles/data/data_types.h
+++ b/Telegram/SourceFiles/data/data_types.h
@@ -234,52 +234,53 @@ enum class MessageFlag : uint32 {
 	Outgoing              = (1U << 11),
 	Pinned                = (1U << 12),
 	MediaIsUnread         = (1U << 13),
-	MentionsMe            = (1U << 14),
-	IsOrWasScheduled      = (1U << 15),
-	NoForwards            = (1U << 16),
+	HasUnreadReaction     = (1U << 14),
+	MentionsMe            = (1U << 15),
+	IsOrWasScheduled      = (1U << 16),
+	NoForwards            = (1U << 17),
 
 	// Needs to return back to inline mode.
-	HasSwitchInlineButton = (1U << 17),
+	HasSwitchInlineButton = (1U << 18),
 
 	// For "shared links" indexing.
-	HasTextLinks          = (1U << 18),
+	HasTextLinks          = (1U << 19),
 
 	// Group / channel create or migrate service message.
-	IsGroupEssential      = (1U << 19),
+	IsGroupEssential      = (1U << 20),
 
 	// Edited media is generated on the client
 	// and should not update media from server.
-	IsLocalUpdateMedia    = (1U << 20),
+	IsLocalUpdateMedia    = (1U << 21),
 
 	// Sent from inline bot, need to re-set media when sent.
-	FromInlineBot         = (1U << 21),
+	FromInlineBot         = (1U << 22),
 
 	// Generated on the client side and should be unread.
-	ClientSideUnread      = (1U << 22),
+	ClientSideUnread      = (1U << 23),
 
 	// In a supergroup.
-	HasAdminBadge         = (1U << 23),
+	HasAdminBadge         = (1U << 24),
 
 	// Outgoing message that is being sent.
-	BeingSent             = (1U << 24),
+	BeingSent             = (1U << 25),
 
 	// Outgoing message and failed to be sent.
-	SendingFailed         = (1U << 25),
+	SendingFailed         = (1U << 26),
 
 	// No media and only a several emoji text.
-	IsolatedEmoji         = (1U << 26),
+	IsolatedEmoji         = (1U << 27),
 
 	// Message existing in the message history.
-	HistoryEntry          = (1U << 27),
+	HistoryEntry          = (1U << 28),
 
 	// Local message, not existing on the server.
-	Local                 = (1U << 28),
+	Local                 = (1U << 29),
 
 	// Fake message for some UI element.
-	FakeHistoryItem       = (1U << 29),
+	FakeHistoryItem       = (1U << 30),
 
 	// Contact sign-up message, notification should be skipped for Silent.
-	IsContactSignUp       = (1U << 30),
+	IsContactSignUp       = (1U << 31),
 };
 inline constexpr bool is_flag_type(MessageFlag) { return true; }
 using MessageFlags = base::flags<MessageFlag>;
diff --git a/Telegram/SourceFiles/history/history_item.cpp b/Telegram/SourceFiles/history/history_item.cpp
index ef535048b..54201c754 100644
--- a/Telegram/SourceFiles/history/history_item.cpp
+++ b/Telegram/SourceFiles/history/history_item.cpp
@@ -337,13 +337,7 @@ bool HistoryItem::isUnreadMention() const {
 }
 
 bool HistoryItem::hasUnreadReaction() const {
-	const auto &recent = recentReactions();
-	for (const auto &[emoji, list] : recent) {
-		if (ranges::contains(list, true, &Data::RecentReaction::unread)) {
-			return true;
-		}
-	}
-	return false;
+	return (_flags & MessageFlag::HasUnreadReaction);
 }
 
 bool HistoryItem::mentionsMe() const {
@@ -381,7 +375,12 @@ void HistoryItem::markMediaAndMentionRead() {
 }
 
 void HistoryItem::markReactionsRead() {
-
+	if (_reactions) {
+		_reactions->markRead();
+	}
+	_flags &= ~MessageFlag::HasUnreadReaction;
+	history()->updateChatListEntry();
+	history()->unreadReactions().erase(id);
 }
 
 bool HistoryItem::markContentsRead() {
@@ -850,7 +849,15 @@ void HistoryItem::updateReactions(const MTPMessageReactions *reactions) {
 		: nullptr;
 	const auto toContact = toUser && toUser->isContact();
 	const auto maybeNotify = toContact && lookupHisReaction().isEmpty();
+	const auto hadUnread = hasUnreadReaction();
 	setReactions(reactions);
+	const auto hasUnread = _reactions && !_reactions->findUnread().isEmpty();
+	if (hasUnread && !hadUnread) {
+		_flags |= MessageFlag::HasUnreadReaction;
+		addToUnreadThings(HistoryUnreadThings::AddType::New);
+	} else if (!hasUnread && hadUnread) {
+		markReactionsRead();
+	}
 	if (maybeNotify) {
 		if (const auto reaction = lookupHisReaction(); !reaction.isEmpty()) {
 			const auto notification = ItemNotification{
@@ -871,6 +878,9 @@ void HistoryItem::setReactions(const MTPMessageReactions *reactions) {
 		_flags &= ~MessageFlag::CanViewReactions;
 		if (_reactions) {
 			_reactions = nullptr;
+			if (hasUnreadReaction()) {
+				markReactionsRead();
+			}
 			history()->owner().notifyItemDataChange(this);
 		}
 		return;