1 files changed, 7 insertions, 3 deletions
diff --git a/03-refactor/src/usart.c b/03-refactor/src/usart.c
index a3b0061..fc58467 100644
--- a/03-refactor/src/usart.c
+++ b/03-refactor/src/usart.c
@@ -41,9 +41,13 @@ void usart_set_enabled(__IO usart_t* usart, usart_enable_t enabled)
     usart->c1.ue = 0;
   } else {
     /* Set the rx enabled. */
-    usart->c1.re = !!(enabled & USART_ENABLE_RX);
-    usart->c1.te = !!(enabled & USART_ENABLE_TX);
-    usart->c1.ue = 1;
+    union USART_CR1 tmp = usart->c1;
+
+    tmp.re = !!(enabled & USART_ENABLE_RX);
+    tmp.te = !!(enabled & USART_ENABLE_TX);
+    tmp.ue = 1;
+
+    usart->c1 = tmp;
   }
 }