diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index cf4c75129f..388deb7645 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -1024,7 +1024,7 @@ void ApiWrap::requestFullPeer(not_null<PeerData*> peer) {
 	const auto requestId = [&] {
 		const auto failHandler = [=](const MTP::Error &error) {
 			_fullPeerRequests.remove(peer);
-			migrateFail(peer, error);
+			migrateFail(peer, error.type());
 		};
 		if (const auto user = peer->asUser()) {
 			if (_session->supportMode()) {
@@ -1191,7 +1191,7 @@ void ApiWrap::requestPeerSettings(not_null<PeerData*> peer) {
 void ApiWrap::migrateChat(
 		not_null<ChatData*> chat,
 		FnMut<void(not_null<ChannelData*>)> done,
-		Fn<void(const MTP::Error &)> fail) {
+		Fn<void(const QString &)> fail) {
 	const auto callback = [&] {
 		return MigrateCallbacks{ std::move(done), std::move(fail) };
 	};
@@ -1214,7 +1214,7 @@ void ApiWrap::migrateChat(
 				chat,
 				MTP::Error::Local(
 					"BAD_MIGRATION",
-					"Chat is already deactivated"));
+					"Chat is already deactivated").type());
 		});
 		return;
 	} else if (!chat->amCreator()) {
@@ -1223,7 +1223,7 @@ void ApiWrap::migrateChat(
 				chat,
 				MTP::Error::Local(
 					"BAD_MIGRATION",
-					"Current user is not the creator of that chat"));
+					"Current user is not the creator of that chat").type());
 		});
 		return;
 	}
@@ -1242,10 +1242,10 @@ void ApiWrap::migrateChat(
 		} else {
 			migrateFail(
 				chat,
-				MTP::Error::Local("MIGRATION_FAIL", "No channel"));
+				MTP::Error::Local("MIGRATION_FAIL", "No channel").type());
 		}
 	}).fail([=](const MTP::Error &error) {
-		migrateFail(chat, error);
+		migrateFail(chat, error.type());
 	}).send();
 }
 
@@ -1262,9 +1262,8 @@ void ApiWrap::migrateDone(
 	}
 }
 
-void ApiWrap::migrateFail(not_null<PeerData*> peer, const MTP::Error &error) {
-	const auto &type = error.type();
-	if (type == qstr("CHANNELS_TOO_MUCH")) {
+void ApiWrap::migrateFail(not_null<PeerData*> peer, const QString &error) {
+	if (error == u"CHANNELS_TOO_MUCH"_q) {
 		Ui::show(Box<Ui::InformBox>(tr::lng_migrate_error(tr::now)));
 	}
 	if (auto handlers = _migrateCallbacks.take(peer)) {
diff --git a/Telegram/SourceFiles/apiwrap.h b/Telegram/SourceFiles/apiwrap.h
index 80d109effb..52a3257664 100644
--- a/Telegram/SourceFiles/apiwrap.h
+++ b/Telegram/SourceFiles/apiwrap.h
@@ -208,7 +208,7 @@ public:
 	void migrateChat(
 		not_null<ChatData*> chat,
 		FnMut<void(not_null<ChannelData*>)> done,
-		Fn<void(const MTP::Error &)> fail = nullptr);
+		Fn<void(const QString &)> fail = nullptr);
 
 	void markMediaRead(const base::flat_set<not_null<HistoryItem*>> &items);
 	void markMediaRead(not_null<HistoryItem*> item);
@@ -512,7 +512,7 @@ private:
 	void migrateDone(
 		not_null<PeerData*> peer,
 		not_null<ChannelData*> channel);
-	void migrateFail(not_null<PeerData*> peer, const MTP::Error &error);
+	void migrateFail(not_null<PeerData*> peer, const QString &error);
 
 	not_null<Main::Session*> _session;
 
@@ -613,7 +613,7 @@ private:
 
 	struct MigrateCallbacks {
 		FnMut<void(not_null<ChannelData*>)> done;
-		Fn<void(const MTP::Error&)> fail;
+		Fn<void(const QString&)> fail;
 	};
 	base::flat_map<
 		not_null<PeerData*>,
diff --git a/Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp b/Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp
index c9fca8adfa..859504da42 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp
@@ -242,7 +242,7 @@ void ShowEditPermissions(
 		const auto api = &peer->session().api();
 		api->migrateChat(chat, [=](not_null<ChannelData*> channel) {
 			save(channel, result);
-		}, [=](const MTP::Error &) {
+		}, [=](const QString &) {
 			*saving = false;
 		});
 	}, box->lifetime());