diff --git a/webrtc/modules/audio_coding/main/interface/audio_coding_module_typedefs.h b/webrtc/modules/audio_coding/main/interface/audio_coding_module_typedefs.h
index 408bee24af..22b6e7800f 100644
--- a/webrtc/modules/audio_coding/main/interface/audio_coding_module_typedefs.h
+++ b/webrtc/modules/audio_coding/main/interface/audio_coding_module_typedefs.h
@@ -34,25 +34,6 @@ enum ACMVADMode {
   VADVeryAggr = 3
 };
 
-///////////////////////////////////////////////////////////////////////////
-// enum ACMAMRPackingFormat
-// An enumerator for different bit-packing format of AMR codec according to
-// RFC 3267.
-//
-// -AMRUndefined           : undefined.
-// -AMRBandwidthEfficient  : bandwidth-efficient mode.
-// -AMROctetAlligned       : Octet-alligned mode.
-// -AMRFileStorage         : file-storage mode.
-//
-// TODO(henrik.lundin) Remove; only referenced in file_recorder, but all use
-// is no-op.
-enum ACMAMRPackingFormat {
-  AMRUndefined = -1,
-  AMRBandwidthEfficient = 0,
-  AMROctetAlligned = 1,
-  AMRFileStorage = 2
-};
-
 ///////////////////////////////////////////////////////////////////////////
 //
 // Enumeration of Opus mode for intended application.
diff --git a/webrtc/modules/utility/interface/file_recorder.h b/webrtc/modules/utility/interface/file_recorder.h
index 009fa7510e..1e12673eeb 100644
--- a/webrtc/modules/utility/interface/file_recorder.h
+++ b/webrtc/modules/utility/interface/file_recorder.h
@@ -13,7 +13,6 @@
 
 #include "webrtc/common_types.h"
 #include "webrtc/engine_configurations.h"
-#include "webrtc/modules/audio_coding/main/interface/audio_coding_module_typedefs.h"
 #include "webrtc/modules/interface/module_common_types.h"
 #include "webrtc/modules/media_file/interface/media_file_defines.h"
 #include "webrtc/system_wrappers/interface/tick_util.h"
@@ -40,14 +39,12 @@ public:
     virtual int32_t StartRecordingAudioFile(
         const char* fileName,
         const CodecInst& codecInst,
-        uint32_t notification,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage) = 0;
+        uint32_t notification) = 0;
 
     virtual int32_t StartRecordingAudioFile(
         OutStream& destStream,
         const CodecInst& codecInst,
-        uint32_t notification,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage) = 0;
+        uint32_t notification) = 0;
 
     // Stop recording.
     // Note: this API is for both audio and video.
@@ -74,7 +71,6 @@ public:
         const char* fileName,
         const CodecInst& audioCodecInst,
         const VideoCodec& videoCodecInst,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage,
         bool videoOnly = false) = 0;
 
     // Record the video frame in videoFrame to AVI file.
diff --git a/webrtc/modules/utility/source/file_recorder_impl.cc b/webrtc/modules/utility/source/file_recorder_impl.cc
index 1ea62e6e03..c11bbe993f 100644
--- a/webrtc/modules/utility/source/file_recorder_impl.cc
+++ b/webrtc/modules/utility/source/file_recorder_impl.cc
@@ -32,7 +32,6 @@ FileRecorderImpl::FileRecorderImpl(uint32_t instanceID,
       _fileFormat(fileFormat),
       _moduleFile(MediaFile::CreateMediaFile(_instanceID)),
       codec_info_(),
-      _amrFormat(AMRFileStorage),
       _audioBuffer(),
       _audioEncoder(instanceID),
       _audioResampler()
@@ -62,16 +61,13 @@ int32_t FileRecorderImpl::RegisterModuleFileCallback(
 int32_t FileRecorderImpl::StartRecordingAudioFile(
     const char* fileName,
     const CodecInst& codecInst,
-    uint32_t notificationTimeMs,
-    ACMAMRPackingFormat amrFormat)
+    uint32_t notificationTimeMs)
 {
     if(_moduleFile == NULL)
     {
         return -1;
     }
     codec_info_ = codecInst;
-    _amrFormat = amrFormat;
-
     int32_t retVal = 0;
     retVal =_moduleFile->StartRecordingAudioFile(fileName, _fileFormat,
                                                  codecInst,
@@ -97,12 +93,9 @@ int32_t FileRecorderImpl::StartRecordingAudioFile(
 int32_t FileRecorderImpl::StartRecordingAudioFile(
     OutStream& destStream,
     const CodecInst& codecInst,
-    uint32_t notificationTimeMs,
-    ACMAMRPackingFormat amrFormat)
+    uint32_t notificationTimeMs)
 {
     codec_info_ = codecInst;
-    _amrFormat = amrFormat;
-
     int32_t retVal = _moduleFile->StartRecordingAudioStream(
         destStream,
         _fileFormat,
diff --git a/webrtc/modules/utility/source/file_recorder_impl.h b/webrtc/modules/utility/source/file_recorder_impl.h
index 1e83899be4..b4f507e6a7 100644
--- a/webrtc/modules/utility/source/file_recorder_impl.h
+++ b/webrtc/modules/utility/source/file_recorder_impl.h
@@ -50,13 +50,11 @@ public:
     virtual int32_t StartRecordingAudioFile(
         const char* fileName,
         const CodecInst& codecInst,
-        uint32_t notificationTimeMs,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage);
+        uint32_t notificationTimeMs) override;
     virtual int32_t StartRecordingAudioFile(
         OutStream& destStream,
         const CodecInst& codecInst,
-        uint32_t notificationTimeMs,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage);
+        uint32_t notificationTimeMs) override;
     virtual int32_t StopRecording();
     virtual bool IsRecording() const;
     virtual int32_t codec_info(CodecInst& codecInst) const;
@@ -67,8 +65,7 @@ public:
         const char* fileName,
         const CodecInst& audioCodecInst,
         const VideoCodec& videoCodecInst,
-        ACMAMRPackingFormat amrFormat = AMRFileStorage,
-        bool videoOnly = false)
+        bool videoOnly = false) override
     {
         return -1;
     }
@@ -88,8 +85,6 @@ protected:
 
 private:
     CodecInst codec_info_;
-    ACMAMRPackingFormat _amrFormat;
-
     int8_t _audioBuffer[MAX_AUDIO_BUFFER_IN_BYTES];
     AudioCoder _audioEncoder;
     Resampler _audioResampler;