diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h
index fc189e6627..1586a32890 100644
--- a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.h
@@ -43,6 +43,3 @@
 // USB is always used internally so skip the pin objects for it.
 #define IGNORE_PIN_PA24     1
 #define IGNORE_PIN_PA25     1
-
-// Can't fit.
-#define CIRCUITPY_RE 0
diff --git a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
index 51e9b05af2..d3ce35f6d9 100644
--- a/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/circuitplayground_express_displayio/mpconfigboard.mk
@@ -18,6 +18,7 @@ CIRCUITPY_FREQUENCYIO = 0
 CIRCUITPY_I2CPERIPHERAL = 0
 CIRCUITPY_MSGPACK = 0
 CIRCUITPY_PIXELBUF = 0
+CIRCUITPY_RE = 0
 CIRCUITPY_ROTARYIO = 0
 CIRCUITPY_RTC = 0
 # So not all of displayio, sorry!
diff --git a/ports/raspberrypi/mpconfigport.h b/ports/raspberrypi/mpconfigport.h
index 75cbd1ba85..7431519317 100644
--- a/ports/raspberrypi/mpconfigport.h
+++ b/ports/raspberrypi/mpconfigport.h
@@ -27,10 +27,6 @@
 #ifndef __INCLUDED_MPCONFIGPORT_H
 #define __INCLUDED_MPCONFIGPORT_H
 
-#define CIRCUITPY_BINASCII                  (1)
-#define CIRCUITPY_ERRNO                     (1)
-#define CIRCUITPY_JSON                      (1)
-
 #define CIRCUITPY_INTERNAL_NVM_SIZE 0
 
 #define CIRCUITPY_DEFAULT_STACK_SIZE                (24*1024)