diff --git a/src/platform/AT32/platform_mcu.h b/src/platform/AT32/platform_mcu.h
index dc2e81e248..2c55895061 100644
--- a/src/platform/AT32/platform_mcu.h
+++ b/src/platform/AT32/platform_mcu.h
@@ -139,7 +139,7 @@ typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState;
 #define CHECK_SPI_RX_DATA_AVAILABLE(instance) LL_SPI_IsActiveFlag_RXNE(instance)
 #define SPI_RX_DATA_REGISTER(base) ((base)->DR)
 
-#define MAX_SPI_PIN_SEL    4
+#define MAX_SPI_PIN_SEL    5
 
 #define UART_TX_BUFFER_ATTRIBUTE                    // NONE
 #define UART_RX_BUFFER_ATTRIBUTE                    // NONE
diff --git a/src/platform/common/stm32/bus_spi_pinconfig.c b/src/platform/common/stm32/bus_spi_pinconfig.c
index ee59d7cd24..59c68b214a 100644
--- a/src/platform/common/stm32/bus_spi_pinconfig.c
+++ b/src/platform/common/stm32/bus_spi_pinconfig.c
@@ -403,6 +403,7 @@ const spiHardware_t spiHardware[] = {
             { DEFIO_TAG_E(PC11), GPIO_MUX_6},
         },
         .mosiPins = {
+            { DEFIO_TAG_E(PB0),  GPIO_MUX_7},
             { DEFIO_TAG_E(PB2),  GPIO_MUX_7},
             { DEFIO_TAG_E(PB5),  GPIO_MUX_6},
             { DEFIO_TAG_E(PC12),  GPIO_MUX_6},