diff --git a/ports/nrf/modules/machine/spi.c b/ports/nrf/modules/machine/spi.c
index 4361a8f8f..1e149711c 100644
--- a/ports/nrf/modules/machine/spi.c
+++ b/ports/nrf/modules/machine/spi.c
@@ -39,6 +39,7 @@
 #include "pin.h"
 #include "genhdr/pins.h"
 #include "spi.h"
+#include "wdt.h"
 #if NRFX_SPI_ENABLED
 #include "nrfx_spi.h"
 #else
@@ -404,6 +405,7 @@ MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_readinto_obj, 2, 3, mp_machin
 STATIC mp_obj_t mp_machine_spi_write(mp_obj_t self, mp_obj_t wr_buf) {
     mp_buffer_info_t src;
     mp_get_buffer_raise(wr_buf, &src, MP_BUFFER_READ);
+    wdt_feed();
     spi_transfer(self, src.len, (const uint8_t*)src.buf, NULL);
     return mp_const_none;
 }