diff --git a/modules/video_coding/codecs/vp9/vp9_impl.cc b/modules/video_coding/codecs/vp9/vp9_impl.cc
index d42a1cc3a2..348a0df233 100644
--- a/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -882,9 +882,7 @@ VP9DecoderImpl::VP9DecoderImpl()
     : decode_complete_callback_(nullptr),
       inited_(false),
       decoder_(nullptr),
-      key_frame_required_(true) {
-  memset(&codec_, 0, sizeof(codec_));
-}
+      key_frame_required_(true) {}
 
 VP9DecoderImpl::~VP9DecoderImpl() {
   inited_ = true;  // in order to do the actual release
@@ -900,9 +898,6 @@ VP9DecoderImpl::~VP9DecoderImpl() {
 }
 
 int VP9DecoderImpl::InitDecode(const VideoCodec* inst, int number_of_cores) {
-  if (inst == nullptr) {
-    return WEBRTC_VIDEO_CODEC_ERR_PARAMETER;
-  }
   int ret_val = Release();
   if (ret_val < 0) {
     return ret_val;
@@ -918,10 +913,6 @@ int VP9DecoderImpl::InitDecode(const VideoCodec* inst, int number_of_cores) {
   if (vpx_codec_dec_init(decoder_, vpx_codec_vp9_dx(), &cfg, flags)) {
     return WEBRTC_VIDEO_CODEC_MEMORY;
   }
-  if (&codec_ != inst) {
-    // Save VideoCodec instance for later; mainly for duplicating the decoder.
-    codec_ = *inst;
-  }
 
   if (!frame_buffer_pool_.InitializeVpxUsePool(decoder_)) {
     return WEBRTC_VIDEO_CODEC_MEMORY;
diff --git a/modules/video_coding/codecs/vp9/vp9_impl.h b/modules/video_coding/codecs/vp9/vp9_impl.h
index cdc8a83169..3f10d262ed 100644
--- a/modules/video_coding/codecs/vp9/vp9_impl.h
+++ b/modules/video_coding/codecs/vp9/vp9_impl.h
@@ -163,7 +163,6 @@ class VP9DecoderImpl : public VP9Decoder {
   DecodedImageCallback* decode_complete_callback_;
   bool inited_;
   vpx_codec_ctx_t* decoder_;
-  VideoCodec codec_;
   bool key_frame_required_;
 };
 }  // namespace webrtc