2 files changed, 2 insertions, 2 deletions

diff --git a/examples/stm32f4/src/bin/usb_ethernet.rs b/examples/stm32f4/src/bin/usb_ethernet.rs
index 45dcf56af..34407b95a 100644
--- a/examples/stm32f4/src/bin/usb_ethernet.rs
+++ b/examples/stm32f4/src/bin/usb_ethernet.rs
@@ -94,7 +94,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
-        &mut [],
+        &mut [], // no msos descriptors
         &mut make_static!([0; 128])[..],
     );
 
diff --git a/examples/stm32f4/src/bin/usb_serial.rs b/examples/stm32f4/src/bin/usb_serial.rs
index 3ab9a6c56..3e05b0ef2 100644
--- a/examples/stm32f4/src/bin/usb_serial.rs
+++ b/examples/stm32f4/src/bin/usb_serial.rs
@@ -77,7 +77,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        &mut [],
+        &mut [], // no msos descriptors
         &mut control_buf,
     );