diff --git a/ports/stm32f4/common-hal/busio/SPI.c b/ports/stm32f4/common-hal/busio/SPI.c
index 5196835558..70d4adec44 100644
--- a/ports/stm32f4/common-hal/busio/SPI.c
+++ b/ports/stm32f4/common-hal/busio/SPI.c
@@ -383,20 +383,20 @@ void common_hal_busio_spi_unlock(busio_spi_obj_t *self) {
 
 bool common_hal_busio_spi_write(busio_spi_obj_t *self,
         const uint8_t *data, size_t len) {
-    HAL_StatusTypeDef result = HAL_SPI_Transmit (&self->handle, (uint8_t *)data, (uint16_t)len, 5);
+    HAL_StatusTypeDef result = HAL_SPI_Transmit (&self->handle, (uint8_t *)data, (uint16_t)len, 500);
     return result == HAL_OK ? 1 : 0;
 }
 
 bool common_hal_busio_spi_read(busio_spi_obj_t *self,
         uint8_t *data, size_t len, uint8_t write_value) {
-    HAL_StatusTypeDef result = HAL_SPI_Receive (&self->handle, data, (uint16_t)len, 5);
+    HAL_StatusTypeDef result = HAL_SPI_Receive (&self->handle, data, (uint16_t)len, 500);
     return result == HAL_OK ? 1 : 0;
 }
 
 bool common_hal_busio_spi_transfer(busio_spi_obj_t *self, 
         uint8_t *data_out, uint8_t *data_in, size_t len) {
     HAL_StatusTypeDef result = HAL_SPI_TransmitReceive (&self->handle,
-        data_out, data_in, (uint16_t)len,5);
+        data_out, data_in, (uint16_t)len,500);
     return result == HAL_OK ? 1 : 0;
 }