diff --git a/src/main/drivers/serial_uart_stm32f4xx.c b/src/main/drivers/serial_uart_stm32f4xx.c
index e8cfd6656..7f3bd45c8 100644
--- a/src/main/drivers/serial_uart_stm32f4xx.c
+++ b/src/main/drivers/serial_uart_stm32f4xx.c
@@ -289,7 +289,7 @@ void uartIrqHandler(uartPort_t *s)
         }
     }
 
-    if (USART_GetITStatus(s->USARTx, USART_FLAG_ORE) == SET)
+    if (USART_GetITStatus(s->USARTx, USART_IT_ORE) == SET)
     {
         USART_ClearITPendingBit (s->USARTx, USART_IT_ORE);
     }