diff --git a/audio/test/low_bandwidth_audio_test.cc b/audio/test/low_bandwidth_audio_test.cc
index 049b5e5150..50cf499920 100644
--- a/audio/test/low_bandwidth_audio_test.cc
+++ b/audio/test/low_bandwidth_audio_test.cc
@@ -8,6 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include "absl/flags/declare.h"
 #include "absl/flags/flag.h"
 #include "api/test/simulated_network.h"
 #include "audio/test/audio_end_to_end_test.h"
diff --git a/audio/test/pc_low_bandwidth_audio_test.cc b/audio/test/pc_low_bandwidth_audio_test.cc
index aafb65f15d..cb50bea26a 100644
--- a/audio/test/pc_low_bandwidth_audio_test.cc
+++ b/audio/test/pc_low_bandwidth_audio_test.cc
@@ -10,7 +10,7 @@
 
 #include <memory>
 
-#include "absl/flags/flag.h"
+#include "absl/flags/declare.h"
 #include "api/test/create_network_emulation_manager.h"
 #include "api/test/create_peerconnection_quality_test_fixture.h"
 #include "api/test/network_emulation_manager.h"
diff --git a/test/testsupport/test_artifacts_unittest.cc b/test/testsupport/test_artifacts_unittest.cc
index 98de9e4bb8..fb577610fb 100644
--- a/test/testsupport/test_artifacts_unittest.cc
+++ b/test/testsupport/test_artifacts_unittest.cc
@@ -14,6 +14,7 @@
 
 #include <string>
 
+#include "absl/flags/declare.h"
 #include "absl/flags/flag.h"
 #include "rtc_base/system/file_wrapper.h"
 #include "test/gtest.h"