diff --git a/libraries/drivers/drv_usart.c b/libraries/drivers/drv_usart.c
index 0823feae..e0b8e0db 100644
--- a/libraries/drivers/drv_usart.c
+++ b/libraries/drivers/drv_usart.c
@@ -393,8 +393,8 @@ static rt_err_t stm32_gpio_configure(struct stm32_uart_config *config)
         { .pin_index = GET_PIN(C, 11), .afs[0] = {.uart_num = UART_IS_RX|3, .af_num =  7}},
         { .pin_index = GET_PIN(C, 10), .afs[0] = {.uart_num = UART_IS_TX|4, .af_num =  8}},
         { .pin_index = GET_PIN(C, 11), .afs[0] = {.uart_num = UART_IS_RX|4, .af_num =  8}},
-        { .pin_index = GET_PIN(C, 12), .afs[0] = {.uart_num = UART_IS_RX|5, .af_num =  8}},
-        { .pin_index = GET_PIN(D,  2), .afs[0] = {.uart_num = UART_IS_TX|5, .af_num =  8}},
+        { .pin_index = GET_PIN(C, 12), .afs[0] = {.uart_num = UART_IS_TX|5, .af_num =  8}},
+        { .pin_index = GET_PIN(D,  2), .afs[0] = {.uart_num = UART_IS_RX|5, .af_num =  8}},
         { .pin_index = GET_PIN(D,  1), .afs[0] = {.uart_num = UART_IS_TX|4, .af_num =  8}},
         { .pin_index = GET_PIN(D,  0), .afs[0] = {.uart_num = UART_IS_RX|4, .af_num =  8}},
         { .pin_index = GET_PIN(D,  5), .afs[0] = {.uart_num = UART_IS_TX|2, .af_num =  7}},