diff --git a/src/build/common.gypi b/src/build/common.gypi
index 5a550786e1..86b589053c 100644
--- a/src/build/common.gypi
+++ b/src/build/common.gypi
@@ -174,17 +174,6 @@
           'WEBRTC_ANDROID_OPENSLES',
          ],
       }],
-      ['clang==1', {
-        'xcode_settings': {
-          'WARNING_CFLAGS': [
-            # TODO(thakis): Remove once all violations are fixed.
-            '-Wno-unused-private-field',
-          ],
-        },
-        'cflags': [
-          '-Wno-unused-private-field',
-        ]
-      }],
     ], # conditions
   }, # target_defaults
 }
diff --git a/src/modules/remote_bitrate_estimator/overuse_detector.cc b/src/modules/remote_bitrate_estimator/overuse_detector.cc
index 133614f7c0..1c5bf9d831 100644
--- a/src/modules/remote_bitrate_estimator/overuse_detector.cc
+++ b/src/modules/remote_bitrate_estimator/overuse_detector.cc
@@ -29,7 +29,6 @@ extern MatlabEngine eng;  // global variable defined elsewhere
 namespace webrtc {
 OverUseDetector::OverUseDetector(const OverUseDetectorOptions& options)
     : options_(options),
-      first_packet_(true),
       current_frame_(),
       prev_frame_(),
       num_of_deltas_(0),
diff --git a/src/modules/remote_bitrate_estimator/overuse_detector.h b/src/modules/remote_bitrate_estimator/overuse_detector.h
index ba4c0dcdaf..3fd3933626 100644
--- a/src/modules/remote_bitrate_estimator/overuse_detector.h
+++ b/src/modules/remote_bitrate_estimator/overuse_detector.h
@@ -74,7 +74,6 @@ class OverUseDetector {
   OverUseDetectorOptions options_;  // Must be first member
                                     // variable. Cannot be const
                                     // because we need to be copyable.
-  bool first_packet_;
   FrameSample current_frame_;
   FrameSample prev_frame_;
   uint16_t num_of_deltas_;
diff --git a/src/modules/utility/source/file_recorder_impl.cc b/src/modules/utility/source/file_recorder_impl.cc
index ab4cbf3b34..b7ec08488a 100644
--- a/src/modules/utility/source/file_recorder_impl.cc
+++ b/src/modules/utility/source/file_recorder_impl.cc
@@ -65,7 +65,6 @@ FileRecorderImpl::FileRecorderImpl(WebRtc_UWord32 instanceID,
     : _instanceID(instanceID),
       _fileFormat(fileFormat),
       _moduleFile(MediaFile::CreateMediaFile(_instanceID)),
-      _stream(NULL),
       codec_info_(),
       _amrFormat(AMRFileStorage),
       _audioBuffer(),
diff --git a/src/modules/utility/source/file_recorder_impl.h b/src/modules/utility/source/file_recorder_impl.h
index 36841664d1..6e56972016 100644
--- a/src/modules/utility/source/file_recorder_impl.h
+++ b/src/modules/utility/source/file_recorder_impl.h
@@ -93,7 +93,6 @@ protected:
     MediaFile* _moduleFile;
 
 private:
-    OutStream* _stream;
     CodecInst codec_info_;
     ACMAMRPackingFormat _amrFormat;
 
diff --git a/src/modules/video_coding/main/source/generic_encoder.cc b/src/modules/video_coding/main/source/generic_encoder.cc
index fb02c996f7..f49297696d 100644
--- a/src/modules/video_coding/main/source/generic_encoder.cc
+++ b/src/modules/video_coding/main/source/generic_encoder.cc
@@ -151,8 +151,10 @@ _mediaOpt(NULL),
 _encodedBytes(0),
 _payloadType(0),
 _codecType(kVideoCodecUnknown),
-_internalSource(false),
-_bitStreamAfterEncoder(NULL)
+_internalSource(false)
+#ifdef DEBUG_ENCODER_BIT_STREAM
+, _bitStreamAfterEncoder(NULL)
+#endif
 {
 #ifdef DEBUG_ENCODER_BIT_STREAM
     _bitStreamAfterEncoder = fopen("encoderBitStream.bit", "wb");
diff --git a/src/modules/video_coding/main/source/generic_encoder.h b/src/modules/video_coding/main/source/generic_encoder.h
index ce80f054db..c75339b7c2 100644
--- a/src/modules/video_coding/main/source/generic_encoder.h
+++ b/src/modules/video_coding/main/source/generic_encoder.h
@@ -67,7 +67,9 @@ private:
     WebRtc_UWord8             _payloadType;
     VideoCodecType            _codecType;
     bool                      _internalSource;
+#ifdef DEBUG_ENCODER_BIT_STREAM
     FILE*                     _bitStreamAfterEncoder;
+#endif
 };// end of VCMEncodeFrameCallback class
 
 
diff --git a/src/modules/video_coding/main/source/video_coding_impl.cc b/src/modules/video_coding/main/source/video_coding_impl.cc
index 6ca8cd6c48..2c71c11d63 100644
--- a/src/modules/video_coding/main/source/video_coding_impl.cc
+++ b/src/modules/video_coding/main/source/video_coding_impl.cc
@@ -64,7 +64,9 @@ _receiveStatsCallback(NULL),
 _packetRequestCallback(NULL),
 _decoder(NULL),
 _dualDecoder(NULL),
+#ifdef DEBUG_DECODER_BIT_STREAM
 _bitStreamBeforeDecoder(NULL),
+#endif
 _frameFromFile(),
 _keyRequestMode(kKeyOnError),
 _scheduleKeyRequest(false),
@@ -76,7 +78,9 @@ _nextFrameType(kVideoFrameDelta),
 _mediaOpt(id, clock_),
 _sendCodecType(kVideoCodecUnknown),
 _sendStatsCallback(NULL),
+#ifdef DEBUG_ENCODER_INPUT
 _encoderInputFile(NULL),
+#endif
 
 _codecDataBase(id),
 _receiveStatsTimer(1000, clock_),
diff --git a/src/modules/video_coding/main/source/video_coding_impl.h b/src/modules/video_coding/main/source/video_coding_impl.h
index 6278294af2..3228d44b5d 100644
--- a/src/modules/video_coding/main/source/video_coding_impl.h
+++ b/src/modules/video_coding/main/source/video_coding_impl.h
@@ -285,7 +285,9 @@ private:
     VCMPacketRequestCallback*           _packetRequestCallback;
     VCMGenericDecoder*                  _decoder;
     VCMGenericDecoder*                  _dualDecoder;
+#ifdef DEBUG_DECODER_BIT_STREAM
     FILE*                               _bitStreamBeforeDecoder;
+#endif
     VCMFrameBuffer                      _frameFromFile;
     VCMKeyRequestMode                   _keyRequestMode;
     bool                                _scheduleKeyRequest;
@@ -297,7 +299,9 @@ private:
     VCMMediaOptimization                _mediaOpt;
     VideoCodecType                      _sendCodecType;
     VCMSendStatisticsCallback*          _sendStatsCallback;
+#ifdef DEBUG_ENCODER_INPUT
     FILE*                               _encoderInputFile;
+#endif
 
     VCMCodecDataBase                    _codecDataBase;
     VCMProcessTimer                     _receiveStatsTimer;
diff --git a/src/voice_engine/main/source/transmit_mixer.cc b/src/voice_engine/main/source/transmit_mixer.cc
index db5a089c7f..913b7fee2b 100644
--- a/src/voice_engine/main/source/transmit_mixer.cc
+++ b/src/voice_engine/main/source/transmit_mixer.cc
@@ -205,7 +205,6 @@ TransmitMixer::TransmitMixer(const WebRtc_UWord32 instanceId) :
     _mute(false),
     _remainingMuteMicTimeMs(0),
     _mixingFrequency(0),
-    _includeAudioLevelIndication(false),
     stereo_codec_(false),
     swap_stereo_channels_(false)
 {
diff --git a/src/voice_engine/main/source/transmit_mixer.h b/src/voice_engine/main/source/transmit_mixer.h
index 54383e3889..da87218cd1 100644
--- a/src/voice_engine/main/source/transmit_mixer.h
+++ b/src/voice_engine/main/source/transmit_mixer.h
@@ -233,7 +233,6 @@ private:
     bool _mute;
     WebRtc_Word32 _remainingMuteMicTimeMs;
     int _mixingFrequency;
-    bool _includeAudioLevelIndication;
     bool stereo_codec_;
     bool swap_stereo_channels_;
 };