diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index 24e46db..312df72 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -35,6 +35,7 @@
         desc->reply = mReplyMQ->dupeDesc();
     }
     if (mDataMQ) {
+        desc->frameSizeBytes = mFrameSize;
         desc->bufferSizeFrames =
                 mDataMQ->getQuantumCount() * mDataMQ->getQuantumSize() / mFrameSize;
         desc->audio.set<StreamDescriptor::AudioBuffer::Tag::fmq>(mDataMQ->dupeDesc());