diff --git a/src/modules/utility/source/file_player_impl.cc b/src/modules/utility/source/file_player_impl.cc
index f2162a66b..af7d615f3 100644
--- a/src/modules/utility/source/file_player_impl.cc
+++ b/src/modules/utility/source/file_player_impl.cc
@@ -64,10 +64,12 @@ FilePlayerImpl::FilePlayerImpl(const WebRtc_UWord32 instanceID,
       _fileFormat(fileFormat),
       _fileModule(*MediaFile::CreateMediaFile(instanceID)),
       _decodedLengthInMS(0),
+      _decodedAudioBuffer(),
       _audioDecoder(instanceID),
       _codec(),
       _numberOf10MsPerFrame(0),
       _numberOf10MsInDecoder(0),
+      _resampler(),
       _scaling(1.0)
 {
     _codec.plfreq = 0;
@@ -466,11 +468,14 @@ VideoFilePlayerImpl::VideoFilePlayerImpl(WebRtc_UWord32 instanceID,
                                          FileFormats fileFormat)
     : FilePlayerImpl(instanceID,fileFormat),
       _videoDecoder(*new VideoCoder(instanceID)),
+      video_codec_info_(),
       _decodedVideoFrames(0),
       _encodedData(*new EncodedVideoData()),
       _frameScaler(*new FrameScaler()),
       _critSec(CriticalSectionWrapper::CreateCriticalSection()),
+      _startTime(),
       _accumulatedRenderTimeMs(0),
+      _frameLengthMS(0),
       _numberOfFramesRead(0),
       _videoOnly(false)
 {
diff --git a/src/modules/utility/source/file_recorder_impl.cc b/src/modules/utility/source/file_recorder_impl.cc
index 15a447237..1ae4f30fa 100644
--- a/src/modules/utility/source/file_recorder_impl.cc
+++ b/src/modules/utility/source/file_recorder_impl.cc
@@ -65,8 +65,12 @@ FileRecorderImpl::FileRecorderImpl(WebRtc_UWord32 instanceID,
     : _instanceID(instanceID),
       _fileFormat(fileFormat),
       _moduleFile(MediaFile::CreateMediaFile(_instanceID)),
+      _stream(NULL),
+      codec_info_(),
       _amrFormat(AMRFileStorage),
-      _audioEncoder(instanceID)
+      _audioBuffer(),
+      _audioEncoder(instanceID),
+      _audioResampler()
 {
 }
 
@@ -353,7 +357,8 @@ class AudioFrameFileInfo
                      const WebRtc_UWord16 audioSize,
                      const WebRtc_UWord16 audioMS,
                      const TickTime& playoutTS)
-           : _audioSize(audioSize), _audioMS(audioMS) ,_playoutTS(playoutTS)
+           : _audioData(), _audioSize(audioSize), _audioMS(audioMS),
+             _playoutTS(playoutTS)
        {
            if(audioSize > MAX_AUDIO_BUFFER_IN_BYTES)
            {