diff --git a/dom/media/AudioStream.cpp b/dom/media/AudioStream.cpp
index ce6fb2f3bc8d..dcabdb877c36 100644
--- a/dom/media/AudioStream.cpp
+++ b/dom/media/AudioStream.cpp
@@ -350,6 +350,7 @@ AudioStream::Init(uint32_t aNumChannels, uint32_t aChannelMap, uint32_t aRate)
   params.channels = mOutChannels;
   params.layout = CubebUtils::ConvertChannelMapToCubebLayout(aChannelMap);
   params.format = ToCubebFormat<AUDIO_OUTPUT_FORMAT>::value;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
 
   mAudioClock.Init(aRate);
 
diff --git a/dom/media/GraphDriver.cpp b/dom/media/GraphDriver.cpp
index f37568e21816..f39f51913c04 100644
--- a/dom/media/GraphDriver.cpp
+++ b/dom/media/GraphDriver.cpp
@@ -627,6 +627,7 @@ AudioCallbackDriver::Init()
 
   output.channels = mOutputChannels;
   output.layout = CubebUtils::GetPreferredChannelLayoutOrSMPTE(cubebContext, mOutputChannels);
+  output.prefs = CUBEB_STREAM_PREF_NONE;
 
   Maybe<uint32_t> latencyPref = CubebUtils::GetCubebMSGLatencyInFrames();
   if (latencyPref) {