diff --git a/ports/samd/mpconfigport.h b/ports/samd/mpconfigport.h
index bc1ad3d988..3b89ee082b 100644
--- a/ports/samd/mpconfigport.h
+++ b/ports/samd/mpconfigport.h
@@ -99,8 +99,6 @@
 #define MICROPY_PY_MACHINE_SOFTI2C          (1)
 #define MICROPY_PY_MACHINE_SPI              (1)
 #define MICROPY_PY_MACHINE_SOFTSPI          (1)
-#define MICROPY_HW_SOFTSPI_MIN_DELAY        (1)
-#define MICROPY_HW_SOFTSPI_MAX_BAUDRATE     (1000000)
 #define MICROPY_PY_MACHINE_TIMER            (1)
 #define MICROPY_SOFT_TIMER_TICKS_MS         systick_ms
 #define MICROPY_PY_OS_DUPTERM               (3)