diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
index 4eead04b07..810d86581b 100644
--- a/ports/atmel-samd/Makefile
+++ b/ports/atmel-samd/Makefile
@@ -150,8 +150,7 @@ else
   CFLAGS += -flto -flto-partition=none
 
   ifeq ($(CIRCUITPY_FULL_BUILD),0)
-    # This is making the build larger in some cases (gcc 10.2.1), so turn it off for now
-    # CFLAGS += --param inline-unit-growth=15 --param max-inline-insns-auto=20
+    CFLAGS += --param inline-unit-growth=15 --param max-inline-insns-auto=20
   endif
 
   ifdef CFLAGS_BOARD