diff --git a/avr/modules/uart_hw/lowlevel_uart1.asm b/avr/modules/uart_hw/lowlevel_uart1.asm
index 6d30e94..a9c8df2 100644
--- a/avr/modules/uart_hw/lowlevel_uart1.asm
+++ b/avr/modules/uart_hw/lowlevel_uart1.asm
@@ -62,7 +62,7 @@ UART_HW_Uart1_StartRx:
 ; ---------------------------------------------------------------------------
 ; @routine UART_HW_Uart1_StopRx @global
 ;
-; @clobbers none
+; @clobbers R16
 
 UART_HW_Uart1_StopRx:
   lds r16, UCSR1B
@@ -77,7 +77,7 @@ UART_HW_Uart1_StopRx:
 ; @routine UART_HW_Uart1_StartTx @global
 ;
 ; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
-; @clobbers none
+; @clobbers R16
 
 UART_HW_Uart1_StartTx:
   lds r16, UCSR1B
@@ -92,7 +92,7 @@ UART_HW_Uart1_StartTx:
 ; @routine UART_HW_Uart1_StopTx @global
 ;
 ; @param Y pointer to interface data in SRAM (see @ref UART_HW_IFACE_OFFS_STATE)
-; @clobbers none
+; @clobbers R16
 
 UART_HW_Uart1_StopTx:
   lds r16, UCSR1B