diff --git a/common/usart.c b/common/usart.c
index e6c7373c5..b804ac8df 100644
--- a/common/usart.c
+++ b/common/usart.c
@@ -236,7 +236,13 @@ void usart_init(uint32_t baudrate, uint8_t parity) {
     //       OVER = 1,  -yes we are oversampling
     //          baudrate == selected clock/8/CD    --> this is ours
     // 
-    pUS1->US_BRGR =  48000000 / (usart_baudrate << 3);
+    uint32_t fractional = 0;
+    if ( baudrate == 921600 )
+        fractional = 4;
+    else if ( baudrate == 1382400 )
+        fractional = 2;
+    uint32_t brgr = 48000000 / (usart_baudrate << 3);
+    pUS1->US_BRGR =  (fractional << 16) | brgr;
 
     // Write the Timeguard Register
     pUS1->US_TTGR = 0;
diff --git a/common/usart.h b/common/usart.h
index 5cf549ba9..5fa0873c9 100644
--- a/common/usart.h
+++ b/common/usart.h
@@ -8,6 +8,9 @@
 #define USART_BAUD_RATE 115200
 //#define USART_BAUD_RATE 230400
 //#define USART_BAUD_RATE 460800
+//#define USART_BAUD_RATE 921600
+//#define USART_BAUD_RATE 1382400
+
 extern uint32_t usart_baudrate;
 #define USART_PARITY 'N'
 extern uint8_t usart_parity;