diff --git a/src/main/drivers/serial_uart_impl.h b/src/main/drivers/serial_uart_impl.h
index bd11aa96b2..798b8d40f2 100644
--- a/src/main/drivers/serial_uart_impl.h
+++ b/src/main/drivers/serial_uart_impl.h
@@ -47,8 +47,12 @@
 #define UART_RX_BUFFER_SIZE     128
 #endif
 #ifndef UART_TX_BUFFER_SIZE
+#ifdef USE_MSP_DISPLAYPORT
+#define UART_TX_BUFFER_SIZE     1280
+#else
 #define UART_TX_BUFFER_SIZE     256
 #endif
+#endif
 #elif defined(STM32F7)
 #define UARTDEV_COUNT_MAX 8
 #define UARTHARDWARE_MAX_PINS 4
@@ -56,8 +60,12 @@
 #define UART_RX_BUFFER_SIZE     128
 #endif
 #ifndef UART_TX_BUFFER_SIZE
+#ifdef USE_MSP_DISPLAYPORT
+#define UART_TX_BUFFER_SIZE     1280
+#else
 #define UART_TX_BUFFER_SIZE     256
 #endif
+#endif
 #elif defined(STM32H7)
 #define UARTDEV_COUNT_MAX 8
 #define UARTHARDWARE_MAX_PINS 5
@@ -65,8 +73,12 @@
 #define UART_RX_BUFFER_SIZE     128
 #endif
 #ifndef UART_TX_BUFFER_SIZE
+#ifdef USE_MSP_DISPLAYPORT
+#define UART_TX_BUFFER_SIZE     1280
+#else
 #define UART_TX_BUFFER_SIZE     256
 #endif
+#endif
 #elif defined(STM32G4)
 #define UARTDEV_COUNT_MAX 9  // UART1~5 + UART9 (Implemented with LPUART1)
 #define UARTHARDWARE_MAX_PINS 3
@@ -74,8 +86,12 @@
 #define UART_RX_BUFFER_SIZE     128
 #endif
 #ifndef UART_TX_BUFFER_SIZE
+#ifdef USE_MSP_DISPLAYPORT
+#define UART_TX_BUFFER_SIZE     1280
+#else
 #define UART_TX_BUFFER_SIZE     256
 #endif
+#endif
 #else
 #error unknown MCU family
 #endif