diff --git a/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk b/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
index 955f3d593b..4a8b85e2f3 100644
--- a/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/stackrduino_m0_pro/mpconfigboard.mk
@@ -19,7 +19,7 @@ CIRCUITPY_I2CPERIPHERAL = 0
 CIRCUITPY_VECTORIO = 0
 CIRCUITPY_BUSDEVICE = 0
 
-CFLAGS_INLINE_LIMIT = 60
+CFLAGS_INLINE_LIMIT = 55
 SUPEROPT_GC = 0
 
 FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel