diff --git a/td/mtproto/RawConnection.cpp b/td/mtproto/RawConnection.cpp
index 776ded6f2..c7b196eaa 100644
--- a/td/mtproto/RawConnection.cpp
+++ b/td/mtproto/RawConnection.cpp
@@ -25,7 +25,6 @@
 #include "td/utils/SliceBuilder.h"
 #include "td/utils/Status.h"
 #include "td/utils/StorerBase.h"
-#include "td/utils/Timer.h"
 
 #include <memory>
 #include <utility>
@@ -248,7 +247,6 @@ class RawConnectionDefault final : public RawConnection {
     if (has_error_) {
       return Status::Error("Connection has already failed");
     }
-    PerfWarningTimer timer("RawConnection::do_flush", 0.01);
     sync_with_poll(socket_fd_);
 
     // read/write
diff --git a/td/mtproto/SessionConnection.cpp b/td/mtproto/SessionConnection.cpp
index eb6b35966..63e785b37 100644
--- a/td/mtproto/SessionConnection.cpp
+++ b/td/mtproto/SessionConnection.cpp
@@ -26,6 +26,7 @@
 #include "td/utils/ScopeGuard.h"
 #include "td/utils/SliceBuilder.h"
 #include "td/utils/Time.h"
+#include "td/utils/Timer.h"
 #include "td/utils/tl_parsers.h"
 #include "td/utils/TlDowncastHelper.h"
 
@@ -1027,6 +1028,7 @@ Status SessionConnection::do_flush() {
                              << connected_flag_ << ' ' << is_main_ << ' ' << need_destroy_auth_key_ << ' '
                              << sent_destroy_auth_key_ << ' ' << callback_ << ' ' << (Time::now() - created_at_) << ' '
                              << (Time::now() - last_read_at_);
+  PerfWarningTimer timer("SessionConnection::do_flush", 0.01);
   CHECK(state_ != Closed);
   if (state_ == Init) {
     TRY_STATUS(init());