diff --git a/ports/nrf/boards/pca10100/mpconfigboard.mk b/ports/nrf/boards/pca10100/mpconfigboard.mk
index 1206c8fe59..715b65e63e 100644
--- a/ports/nrf/boards/pca10100/mpconfigboard.mk
+++ b/ports/nrf/boards/pca10100/mpconfigboard.mk
@@ -8,9 +8,13 @@ MCU_CHIP = nrf52833
 INTERNAL_FLASH_FILESYSTEM = 1
 
 CIRCUITPY_AUDIOMP3 = 0
+CIRCUITPY_BITBANGIO = 0
 CIRCUITPY_BUSIO = 1
+CIRCUITPY_COUNTIO = 0
 CIRCUITPY_DISPLAYIO = 0
 CIRCUITPY_FRAMEBUFFERIO = 0
+CIRCUITPY_FREQUENCYIO = 0
+CIRCUITPY_I2CSLAVE = 0
 CIRCUITPY_NEOPIXEL_WRITE = 0
 CIRCUITPY_NVM = 0
 CIRCUITPY_PIXELBUF  = 0
@@ -20,6 +24,8 @@ CIRCUITPY_RTC = 1
 CIRCUITPY_TOUCHIO = 0
 CIRCUITPY_ULAB = 0
 
+SUPEROPT_GC = 0
+
 # These defines must be overridden before mpconfigboard.h is included, which is
 # why they are passed on the command line.
 CFLAGS += -DSPIM3_BUFFER_SIZE=0 -DSOFTDEVICE_RAM_SIZE='(32*1024)'