diff --git a/Telegram/Resources/tl/api.tl b/Telegram/Resources/tl/api.tl
index 31df0a50d..742f02e12 100644
--- a/Telegram/Resources/tl/api.tl
+++ b/Telegram/Resources/tl/api.tl
@@ -1734,7 +1734,7 @@ messages.getOldFeaturedStickers#7ed094a1 offset:int limit:int hash:long = messag
 messages.getReplies#22ddd30c peer:InputPeer msg_id:int offset_id:int offset_date:int add_offset:int limit:int max_id:int min_id:int hash:long = messages.Messages;
 messages.getDiscussionMessage#446972fd peer:InputPeer msg_id:int = messages.DiscussionMessage;
 messages.readDiscussion#f731a9f4 peer:InputPeer msg_id:int read_max_id:int = Bool;
-messages.unpinAllMessages#f025bc8b peer:InputPeer = messages.AffectedHistory;
+messages.unpinAllMessages#ee22b9a8 flags:# peer:InputPeer top_msg_id:flags.0?int = messages.AffectedHistory;
 messages.deleteChat#5bd0ee50 chat_id:long = Bool;
 messages.deletePhoneCallHistory#f9cbe409 flags:# revoke:flags.0?true = messages.AffectedFoundMessages;
 messages.checkHistoryImport#43fe19f3 import_head:string = messages.HistoryImportParsed;
diff --git a/Telegram/SourceFiles/data/data_shared_media.cpp b/Telegram/SourceFiles/data/data_shared_media.cpp
index 4d32427e8..e2a69482e 100644
--- a/Telegram/SourceFiles/data/data_shared_media.cpp
+++ b/Telegram/SourceFiles/data/data_shared_media.cpp
@@ -149,6 +149,8 @@ rpl::producer<SparseIdsSlice> SharedMediaViewer(
 		session->storage().sharedMediaAllRemoved(
 		) | rpl::filter([=](const AllRemoved &update) {
 			return (update.peerId == key.peerId)
+				&& (!update.topicRootId
+					|| update.topicRootId == key.topicRootId)
 				&& update.types.test(key.type);
 		}) | rpl::filter([=] {
 			return builder->removeAll();
diff --git a/Telegram/SourceFiles/history/history.cpp b/Telegram/SourceFiles/history/history.cpp
index 16b18f87a..51f4c6def 100644
--- a/Telegram/SourceFiles/history/history.cpp
+++ b/Telegram/SourceFiles/history/history.cpp
@@ -550,13 +550,25 @@ void History::unpinMessagesFor(MsgId topicRootId) {
 				topic->setHasPinnedMessages(false);
 			});
 		}
-		for (const auto &message : _messages) {
-			if (message->isPinned()) {
-				message->setIsPinned(false);
+		for (const auto &item : _messages) {
+			if (item->isPinned()) {
+				item->setIsPinned(false);
 			}
 		}
 	} else {
-		// #TODO forum pinned
+		session().storage().remove(
+			Storage::SharedMediaRemoveAll(
+				peer->id,
+				topicRootId,
+				Storage::SharedMediaType::Pinned));
+		if (const auto topic = peer->forumTopicFor(topicRootId)) {
+			topic->setHasPinnedMessages(false);
+		}
+		for (const auto &item : _messages) {
+			if (item->isPinned() && item->topicRootId() == topicRootId) {
+				item->setIsPinned(false);
+			}
+		}
 	}
 }
 
diff --git a/Telegram/SourceFiles/storage/storage_shared_media.cpp b/Telegram/SourceFiles/storage/storage_shared_media.cpp
index a27d0cba2..816cbd61e 100644
--- a/Telegram/SourceFiles/storage/storage_shared_media.cpp
+++ b/Telegram/SourceFiles/storage/storage_shared_media.cpp
@@ -85,8 +85,11 @@ void SharedMedia::remove(SharedMediaRemoveOne &&query) {
 }
 
 void SharedMedia::remove(SharedMediaRemoveAll &&query) {
-	auto peerIt = _lists.lower_bound({ query.peerId, MsgId(0) });
-	while (peerIt != end(_lists) && peerIt->first.peerId == query.peerId) {
+	auto peerIt = _lists.lower_bound({ query.peerId, query.topicRootId });
+	while (peerIt != end(_lists)
+		&& peerIt->first.peerId == query.peerId
+		&& (!query.topicRootId
+			|| peerIt->first.topicRootId == query.topicRootId)) {
 		for (auto index = 0; index != kSharedMediaTypeCount; ++index) {
 			auto type = static_cast<SharedMediaType>(index);
 			if (query.types.test(type)) {
diff --git a/Telegram/SourceFiles/storage/storage_shared_media.h b/Telegram/SourceFiles/storage/storage_shared_media.h
index cf285a6df..6489714b3 100644
--- a/Telegram/SourceFiles/storage/storage_shared_media.h
+++ b/Telegram/SourceFiles/storage/storage_shared_media.h
@@ -124,8 +124,17 @@ struct SharedMediaRemoveAll {
 	: peerId(peerId)
 	, types(types) {
 	}
+	SharedMediaRemoveAll(
+		PeerId peerId,
+		MsgId topicRootId,
+		SharedMediaTypesMask types = SharedMediaTypesMask::All())
+	: peerId(peerId)
+	, topicRootId(topicRootId)
+	, types(types) {
+	}
 
 	PeerId peerId = 0;
+	MsgId topicRootId = 0;
 	SharedMediaTypesMask types;
 
 };
diff --git a/Telegram/SourceFiles/window/window_peer_menu.cpp b/Telegram/SourceFiles/window/window_peer_menu.cpp
index b92700c45..6cce6d8c5 100644
--- a/Telegram/SourceFiles/window/window_peer_menu.cpp
+++ b/Telegram/SourceFiles/window/window_peer_menu.cpp
@@ -1757,15 +1757,18 @@ void UnpinAllMessages(
 	const auto callback = crl::guard(navigation, [=](Fn<void()> &&close) {
 		close();
 		const auto strong = weak.get();
-		if (!strong || !strong->asHistory()) { // #TODO forum pinned
+		if (!strong) {
 			return;
 		}
 		const auto api = &strong->session().api();
 		const auto sendRequest = [=](auto self) -> void {
 			const auto history = strong->owningHistory();
 			const auto topicRootId = strong->topicRootId();
+			using Flag = MTPmessages_UnpinAllMessages::Flag;
 			api->request(MTPmessages_UnpinAllMessages(
-				history->peer->input
+				MTP_flags(topicRootId ? Flag::f_top_msg_id : Flag()),
+				history->peer->input,
+				MTP_int(topicRootId.bare)
 			)).done([=](const MTPmessages_AffectedHistory &result) {
 				const auto peer = history->peer;
 				const auto offset = api->applyAffectedHistory(peer, result);