diff --git a/libi2pd_client/Torrents.cpp b/libi2pd_client/Torrents.cpp
index 9c4bd751..9af1aba2 100644
--- a/libi2pd_client/Torrents.cpp
+++ b/libi2pd_client/Torrents.cpp
@@ -490,7 +490,15 @@ namespace torrents
 				else if (key == "piece length")
 				{
 					auto [value, l] = ExtractInteger (buf);
-					if (l)  m_PieceLength = value;
+					if (l)
+					{
+						if ((size_t)value < MIN_PIECE_LENGTH || (size_t)value > MAX_PIECE_LENGTH)
+						{
+							LogPrint (eLogError, "Torrents: invalid piece length ", value);
+							value = 0;
+						}
+						m_PieceLength = value;
+					}
 					return l;
 				}
 				else if (key == "pieces")
@@ -501,6 +509,8 @@ namespace torrents
 					}
 					if (m_PieceLength > 0 && m_Length > 0)
 						m_Pieces.reserve (m_Length/m_PieceLength + 1);
+					else
+						m_Error = "Malformed metaInfo";
 					return ParsePieces (buf);
 				}
 				else if (key == "files")
diff --git a/libi2pd_client/Torrents.h b/libi2pd_client/Torrents.h
index 538aa062..ca7d4812 100644
--- a/libi2pd_client/Torrents.h
+++ b/libi2pd_client/Torrents.h
@@ -36,6 +36,8 @@ namespace i2p
 namespace torrents
 {
 	constexpr size_t REQUEST_BLOCK_SIZE = 16384;
+	constexpr size_t MIN_PIECE_LENGTH = 16*1024; // 16K
+	constexpr size_t MAX_PIECE_LENGTH = 64*1024*1024; // 64M
 	constexpr uint16_t TORRENT_PORT = 6881; //  not used by required by protocol
 	constexpr int MIN_TRACKER_REQUESTS_INTERVAL = 15000; // in milliseconds
 	constexpr size_t PEER_CONNECTION_RECEIVE_BUFFER_SIZE = 65535;
@@ -219,6 +221,7 @@ namespace torrents
 			std::string_view GetName () const { return m_Name; }
 			void SetName (std::string_view name) { m_Name = AdjustName (name); }
 			bool IsValid () const { return !m_Name.empty () && m_PieceLength && (m_Length || !m_Files.empty ()); }
+			std::string_view GetError () const { return m_Error; }
 			const std::filesystem::path& GetFullPath () const { return m_FullPath; }
 			void SetFullPath (const std::filesystem::path& fullPath) { m_FullPath = fullPath; }
 			const std::list<std::shared_ptr<TorrentFile> >& GetFiles () const { return m_Files; }
@@ -285,7 +288,7 @@ namespace torrents
 
 		private:
 
-			std::string m_Name, m_Announce;
+			std::string m_Name, m_Announce, m_Error;
 			std::filesystem::path m_FullPath;
 			size_t m_Length, m_PieceLength;
 			std::vector<uint8_t> m_Info; // for BEP9
diff --git a/libi2pd_client/TorrentsRPC.cpp b/libi2pd_client/TorrentsRPC.cpp
index 5853e8da..01179593 100644
--- a/libi2pd_client/TorrentsRPC.cpp
+++ b/libi2pd_client/TorrentsRPC.cpp
@@ -355,7 +355,8 @@ namespace torrents
 					return priorities;
 				}
 			},
-			{ "error", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(0); } }, // no error
+			{ "error", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetError ().empty () ? 0 : 3); } }, // no error or local error
+			{ "errorString", [](std::shared_ptr<Torrent> torrent) { return boost::json::value(torrent->GetError ()); } },
 			{ "eta", [](std::shared_ptr<Torrent> torrent)
 				{
 					auto downloadRate = torrent->GetDownloadRate ();