diff --git a/ports/atmel-samd/mpconfigport.mk b/ports/atmel-samd/mpconfigport.mk
index 9d238834fe..9ba16321ca 100644
--- a/ports/atmel-samd/mpconfigport.mk
+++ b/ports/atmel-samd/mpconfigport.mk
@@ -20,6 +20,7 @@ ifeq ($(CHIP_FAMILY),samd21)
 # fit in 256kB of flash
 
 CIRCUITPY_AESIO ?= 0
+CIRCUITPY_ATEXIT ?= 0
 CIRCUITPY_AUDIOMIXER ?= 0
 CIRCUITPY_BINASCII ?= 0
 CIRCUITPY_BITBANGIO ?= 0
@@ -33,6 +34,7 @@ CIRCUITPY_COUNTIO ?= 0
 # Not enough RAM for framebuffers
 CIRCUITPY_FRAMEBUFFERIO ?= 0
 CIRCUITPY_FREQUENCYIO ?= 0
+CIRCUITPY_GETPASS ?= 0
 CIRCUITPY_GIFIO ?= 0
 CIRCUITPY_I2CPERIPHERAL ?= 0
 CIRCUITPY_JSON ?= 0