diff --git a/modules/audio_device/BUILD.gn b/modules/audio_device/BUILD.gn
index 9e591fabcf..67664266a3 100644
--- a/modules/audio_device/BUILD.gn
+++ b/modules/audio_device/BUILD.gn
@@ -38,7 +38,6 @@ config("audio_device_warnings_config") {
       # See https://bugs.chromium.org/p/webrtc/issues/detail?id=6265
       # for -Wno-thread-safety-analysis
       "-Wno-thread-safety-analysis",
-      "-Wno-unused-private-field",
     ]
   }
 }
diff --git a/modules/audio_device/win/audio_device_core_win.cc b/modules/audio_device/win/audio_device_core_win.cc
index 5a0a47883a..4e17ba7b4a 100644
--- a/modules/audio_device/win/audio_device_core_win.cc
+++ b/modules/audio_device/win/audio_device_core_win.cc
@@ -425,7 +425,6 @@ AudioDeviceWindowsCore::AudioDeviceWindowsCore()
       _playIsInitialized(false),
       _speakerIsInitialized(false),
       _microphoneIsInitialized(false),
-      _playBufDelay(80),
       _usingInputDeviceIndex(false),
       _usingOutputDeviceIndex(false),
       _inputDevice(AudioDeviceModule::kDefaultCommunicationDevice),
diff --git a/modules/audio_device/win/audio_device_core_win.h b/modules/audio_device/win/audio_device_core_win.h
index a6cb6ab483..317d034d29 100644
--- a/modules/audio_device/win/audio_device_core_win.h
+++ b/modules/audio_device/win/audio_device_core_win.h
@@ -308,8 +308,6 @@ private:
     uint16_t                          _inputDeviceIndex;
     uint16_t                          _outputDeviceIndex;
 
-    uint16_t                          _playBufDelay;
-
     mutable char                            _str[512];
 };