diff --git a/data/registers/usart_v2.yaml b/data/registers/usart_v2.yaml
index cf64665..0ff3a66 100644
--- a/data/registers/usart_v2.yaml
+++ b/data/registers/usart_v2.yaml
@@ -49,6 +49,7 @@ block/USART:
     - name: TDR
       description: Transmit data register
       byte_offset: 40
+      access: Write
       fieldset: DR
 fieldset/BRR:
   description: Baud rate register