diff --git a/src/transport/serial.rs b/src/transport/serial.rs
index 940f6a8..49c93e3 100644
--- a/src/transport/serial.rs
+++ b/src/transport/serial.rs
@@ -58,6 +58,7 @@ impl PacketTransportSerialCobs {
         let encoded = cobs::encode_vec_including_sentinels(packet);
         log::debug!("sending COBS encoded packet: {:?}", encoded);
         self.serial.write_all(&encoded)?;
+        // This is required to avoid timeout errors on bursty data.
         self.serial.flush()?;
         Ok(())
     }