diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index 203d9d1d97..45c3c11746 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -799,7 +799,6 @@ rtc_library("threading") {
     "../api:sequence_checker",
     "../api/task_queue",
     "synchronization:mutex",
-    "synchronization:sequence_checker",
     "system:no_unique_address",
     "system:rtc_export",
     "task_utils:pending_task_safety_flag",
diff --git a/rtc_base/synchronization/BUILD.gn b/rtc_base/synchronization/BUILD.gn
index 55c5fa8ab2..73ff667246 100644
--- a/rtc_base/synchronization/BUILD.gn
+++ b/rtc_base/synchronization/BUILD.gn
@@ -44,11 +44,6 @@ rtc_library("mutex") {
   }
 }
 
-rtc_source_set("sequence_checker") {
-  sources = [ "sequence_checker.h" ]
-  deps = [ "../../api:sequence_checker" ]
-}
-
 rtc_library("sequence_checker_internal") {
   visibility = [ "../../api:sequence_checker" ]
   sources = [
diff --git a/rtc_base/synchronization/sequence_checker.h b/rtc_base/synchronization/sequence_checker.h
deleted file mode 100644
index 52577bce72..0000000000
--- a/rtc_base/synchronization/sequence_checker.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- *  Copyright 2019 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "api/sequence_checker.h"