diff --git a/ports/atmel-samd/mpconfigport.mk b/ports/atmel-samd/mpconfigport.mk
index 51024b7b67..a82dc8554b 100644
--- a/ports/atmel-samd/mpconfigport.mk
+++ b/ports/atmel-samd/mpconfigport.mk
@@ -87,7 +87,7 @@ CIRCUITPY_TOUCHIO_USE_NATIVE = 0
 CIRCUITPY_ALARM ?= 1
 CIRCUITPY_PS2IO ?= 1
 CIRCUITPY_SAMD ?= 1
-CIRCUITPY_FLOPPYIO ?= 1
+CIRCUITPY_FLOPPYIO ?= $(CIRCUITPY_FULL_BUILD)
 CIRCUITPY_FRAMEBUFFERIO ?= $(CIRCUITPY_FULL_BUILD)
 CIRCUITPY_RGBMATRIX ?= $(CIRCUITPY_FRAMEBUFFERIO)
 CIRCUITPY_WATCHDOG ?= 1