diff --git a/libraries/AP_HAL/UARTDriver.h b/libraries/AP_HAL/UARTDriver.h
index 9a4cb61ecc..ecd671fda6 100644
--- a/libraries/AP_HAL/UARTDriver.h
+++ b/libraries/AP_HAL/UARTDriver.h
@@ -135,6 +135,8 @@ public:
         return 57;
     }
 
+    virtual uint32_t get_baud_rate() const { return 0; }
+
     /*
       return true if this UART has DMA enabled on both RX and TX
      */