diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60317188..ae72f910 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -453,6 +453,7 @@ set(TDLIB_SOURCE
   td/mtproto/SessionConnection.h
   td/mtproto/TcpTransport.h
   td/mtproto/Transport.h
+  td/mtproto/TransportType.h
   td/mtproto/utils.h
 
   td/telegram/AccessRights.h
diff --git a/td/mtproto/HttpTransport.h b/td/mtproto/HttpTransport.h
index 98cfd54b..ea333e70 100644
--- a/td/mtproto/HttpTransport.h
+++ b/td/mtproto/HttpTransport.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "td/mtproto/IStreamTransport.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/net/HttpQuery.h"
 #include "td/net/HttpReader.h"
diff --git a/td/mtproto/IStreamTransport.cpp b/td/mtproto/IStreamTransport.cpp
index 334fc186..ca1d4cfc 100644
--- a/td/mtproto/IStreamTransport.cpp
+++ b/td/mtproto/IStreamTransport.cpp
@@ -13,6 +13,7 @@
 
 namespace td {
 namespace mtproto {
+
 unique_ptr<IStreamTransport> create_transport(TransportType type) {
   switch (type.type) {
     case TransportType::ObfuscatedTcp:
@@ -24,5 +25,6 @@ unique_ptr<IStreamTransport> create_transport(TransportType type) {
   }
   UNREACHABLE();
 }
+
 }  // namespace mtproto
 }  // namespace td
diff --git a/td/mtproto/IStreamTransport.h b/td/mtproto/IStreamTransport.h
index 1e7be807..23827ace 100644
--- a/td/mtproto/IStreamTransport.h
+++ b/td/mtproto/IStreamTransport.h
@@ -6,6 +6,8 @@
 //
 #pragma once
 
+#include "td/mtproto/TransportType.h"
+
 #include "td/utils/buffer.h"
 #include "td/utils/port/detail/PollableFd.h"
 #include "td/utils/Status.h"
@@ -13,17 +15,6 @@
 namespace td {
 namespace mtproto {
 
-struct TransportType {
-  enum Type { Tcp, ObfuscatedTcp, Http } type;
-  int16 dc_id;
-  string secret;
-
-  TransportType() : type(Tcp), dc_id(0), secret() {
-  }
-  TransportType(Type type, int16 dc_id, string secret) : type(type), dc_id(dc_id), secret(std::move(secret)) {
-  }
-};
-
 class IStreamTransport {
  public:
   IStreamTransport() = default;
diff --git a/td/mtproto/RawConnection.h b/td/mtproto/RawConnection.h
index f8e26160..7773ae15 100644
--- a/td/mtproto/RawConnection.h
+++ b/td/mtproto/RawConnection.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "td/mtproto/IStreamTransport.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/utils/buffer.h"
 #include "td/utils/BufferedFd.h"
diff --git a/td/mtproto/TransportType.h b/td/mtproto/TransportType.h
new file mode 100644
index 00000000..e5323da4
--- /dev/null
+++ b/td/mtproto/TransportType.h
@@ -0,0 +1,26 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/utils/common.h"
+
+namespace td {
+namespace mtproto {
+
+struct TransportType {
+  enum Type { Tcp, ObfuscatedTcp, Http } type;
+  int16 dc_id;
+  string secret;
+
+  TransportType() : type(Tcp), dc_id(0), secret() {
+  }
+  TransportType(Type type, int16 dc_id, string secret) : type(type), dc_id(dc_id), secret(std::move(secret)) {
+  }
+};
+
+}  // namespace mtproto
+}  // namespace td
diff --git a/td/telegram/net/ConnectionCreator.cpp b/td/telegram/net/ConnectionCreator.cpp
index 7c1d31f3..5b6dded3 100644
--- a/td/telegram/net/ConnectionCreator.cpp
+++ b/td/telegram/net/ConnectionCreator.cpp
@@ -19,7 +19,6 @@
 #include "td/telegram/StateManager.h"
 #include "td/telegram/TdDb.h"
 
-#include "td/mtproto/IStreamTransport.h"
 #include "td/mtproto/PingConnection.h"
 #include "td/mtproto/RawConnection.h"
 
diff --git a/td/telegram/net/ConnectionCreator.h b/td/telegram/net/ConnectionCreator.h
index 41cafe4a..1d0a2d3e 100644
--- a/td/telegram/net/ConnectionCreator.h
+++ b/td/telegram/net/ConnectionCreator.h
@@ -15,7 +15,7 @@
 #include "td/telegram/net/NetQuery.h"
 #include "td/telegram/StateManager.h"
 
-#include "td/mtproto/IStreamTransport.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/actor/actor.h"
 #include "td/actor/PromiseFuture.h"
diff --git a/td/telegram/net/Session.cpp b/td/telegram/net/Session.cpp
index 25c115b2..c77664eb 100644
--- a/td/telegram/net/Session.cpp
+++ b/td/telegram/net/Session.cpp
@@ -20,9 +20,9 @@
 #include "td/mtproto/crypto.h"
 #include "td/mtproto/Handshake.h"
 #include "td/mtproto/HandshakeActor.h"
-#include "td/mtproto/IStreamTransport.h"
 #include "td/mtproto/RawConnection.h"
 #include "td/mtproto/SessionConnection.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/utils/format.h"
 #include "td/utils/logging.h"
diff --git a/test/mtproto.cpp b/test/mtproto.cpp
index bd8ad897..2b280596 100644
--- a/test/mtproto.cpp
+++ b/test/mtproto.cpp
@@ -12,10 +12,10 @@
 #include "td/mtproto/crypto.h"
 #include "td/mtproto/Handshake.h"
 #include "td/mtproto/HandshakeActor.h"
-#include "td/mtproto/IStreamTransport.h"
 #include "td/mtproto/PingConnection.h"
 #include "td/mtproto/RawConnection.h"
 #include "td/mtproto/Transport.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/net/GetHostByNameActor.h"
 #include "td/net/Socks5.h"