diff --git a/drivers/avr/ir_uart.c b/drivers/avr/ir_uart.c
index c000811..dc288c1 100644
--- a/drivers/avr/ir_uart.c
+++ b/drivers/avr/ir_uart.c
@@ -48,6 +48,10 @@ int8_t
 ir_uart_putc (char ch)
 {
     usart1_putc (ch);
+
+    /* The character gets echoed on the UCFK4 so we should
+       probably gobble it here.  */
+
     return 1;
 }