diff --git a/sdk/fidl/fuchsia.hardware.audio/audio.fidl b/sdk/fidl/fuchsia.hardware.audio/audio.fidl
index cbbc464..6278f86 100644
--- a/sdk/fidl/fuchsia.hardware.audio/audio.fidl
+++ b/sdk/fidl/fuchsia.hardware.audio/audio.fidl
@@ -6,8 +6,7 @@
 
 // For an overview see //zircon/driver_interfaces/audio_streaming.md
 
-[Layout = "Simple"]
 protocol Device {
     /// This method obtains a channel in order to serve FIDL over it outside the devhost's control.
-    GetChannel() -> (request<StreamConfig> channel);
+    GetChannel() -> (StreamConfig channel);
 };
diff --git a/src/media/audio/audio_core/plug_detector.cc b/src/media/audio/audio_core/plug_detector.cc
index afcced8..48d4188 100644
--- a/src/media/audio/audio_core/plug_detector.cc
+++ b/src/media/audio/audio_core/plug_detector.cc
@@ -114,8 +114,8 @@
       FX_PLOGS(ERROR, res) << "Failed to open channel to audio " << (is_input ? "input" : "output");
     });
     device->GetChannel([d = std::move(device), this, is_input, name](
-                           ::fidl::InterfaceRequest<fuchsia::hardware::audio::StreamConfig> req) {
-      observer_(req.TakeChannel(), name, is_input);
+                           ::fidl::InterfaceHandle<fuchsia::hardware::audio::StreamConfig> intf) {
+      observer_(intf.TakeChannel(), name, is_input);
     });
   }
   Observer observer_;
diff --git a/src/media/audio/audio_core/plug_detector_unittest.cc b/src/media/audio/audio_core/plug_detector_unittest.cc
index 635cf51..03ac758 100644
--- a/src/media/audio/audio_core/plug_detector_unittest.cc
+++ b/src/media/audio/audio_core/plug_detector_unittest.cc
@@ -39,9 +39,9 @@
  private:
   void GetChannel(GetChannelCallback callback) override {
     FX_CHECK(client_);
-    fidl::InterfaceRequest<fuchsia::hardware::audio::StreamConfig> intf_req = {};
-    intf_req.set_channel(std::move(client_));
-    callback(std::move(intf_req));
+    fidl::InterfaceHandle<fuchsia::hardware::audio::StreamConfig> intf = {};
+    intf.set_channel(std::move(client_));
+    callback(std::move(intf));
   }
 
   zx::channel client_, server_;
diff --git a/src/media/audio/drivers/test/audio_driver_test.cc b/src/media/audio/drivers/test/audio_driver_test.cc
index 7ee65a0..ec1c802 100644
--- a/src/media/audio/drivers/test/audio_driver_test.cc
+++ b/src/media/audio/drivers/test/audio_driver_test.cc
@@ -160,15 +160,15 @@
   // Obtain the stream channel
   auto dev =
       fidl::InterfaceHandle<fuchsia::hardware::audio::Device>(std::move(dev_channel)).BindSync();
-  fidl::InterfaceRequest<fuchsia::hardware::audio::StreamConfig> intf_req = {};
+  fidl::InterfaceHandle<fuchsia::hardware::audio::StreamConfig> intf = {};
 
-  status = dev->GetChannel(&intf_req);
+  status = dev->GetChannel(&intf);
   if (status != ZX_OK) {
     FX_PLOGS(ERROR, status) << "Failed to open channel to audio "
                             << ((device_type == DeviceType::Input) ? "input" : "output");
     FAIL();
   }
-  stream_channel_ = intf_req.TakeChannel();
+  stream_channel_ = intf.TakeChannel();
 
   AUD_VLOG(TRACE) << "Successfully opened devnode '" << name << "' for audio "
                   << ((device_type == DeviceType::Input) ? "input" : "output");