diff --git a/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk b/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
index cec87f2bf9..dc02e1f60d 100644
--- a/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/feather_m0_express/mpconfigboard.mk
@@ -13,8 +13,24 @@ LONGINT_IMPL = MPZ
 
 CIRCUITPY_BITBANGIO = 0
 CIRCUITPY_FREQUENCYIO = 0
+CIRCUITPY_COUNTIO = 0
 CIRCUITPY_I2CPERIPHERAL = 0
 CIRCUITPY_VECTORIO = 0
 
 CFLAGS_INLINE_LIMIT = 60
 SUPEROPT_GC = 0
+
+CFLAGS_BOARD = --param max-inline-insns-auto=15
+ifeq ($(TRANSLATION), ja)
+RELEASE_NEEDS_CLEAN_BUILD = 1
+CFLAGS_INLINE_LIMIT = 35
+endif
+ifeq ($(TRANSLATION), zh_Latn_pinyin)
+RELEASE_NEEDS_CLEAN_BUILD = 1
+CFLAGS_INLINE_LIMIT = 35
+endif
+ifeq ($(TRANSLATION), de_DE)
+RELEASE_NEEDS_CLEAN_BUILD = 1
+CFLAGS_INLINE_LIMIT = 35
+SUPEROPT_VM = 0
+endif