diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
index e38cac224a..15d59171ee 100644
--- a/ports/atmel-samd/Makefile
+++ b/ports/atmel-samd/Makefile
@@ -277,7 +277,6 @@ SRC_COMMON_HAL = \
 	audioio/__init__.c \
 	audioio/AudioOut.c \
 	busio/UART.c \
-	neopixel_write/__init__.c \
 	nvm/__init__.c \
 	nvm/ByteArray.c \
 	pulseio/__init__.c \
diff --git a/ports/atmel-samd/mpconfigport.h b/ports/atmel-samd/mpconfigport.h
index a78210a566..2df138359c 100644
--- a/ports/atmel-samd/mpconfigport.h
+++ b/ports/atmel-samd/mpconfigport.h
@@ -193,11 +193,11 @@ extern const struct _mp_obj_module_t usb_hid_module;
     // Scan gamepad every 32ms
     #define CIRCUITPY_GAMEPAD_TICKS 0x1f
 
-    #define EXTRA_BUILTIN_MODULES
+    #define EXTRA_BUILTIN_MODULES \
+        { MP_OBJ_NEW_QSTR(MP_QSTR_bitbangio), (mp_obj_t)&bitbangio_module }
 //        { MP_OBJ_NEW_QSTR(MP_QSTR_audioio), (mp_obj_t)&audioio_module },
 //        { MP_OBJ_NEW_QSTR(MP_QSTR_audiobusio), (mp_obj_t)&audiobusio_module },
 //        { MP_OBJ_NEW_QSTR(MP_QSTR_pulseio), (mp_obj_t)&pulseio_module },
-//        { MP_OBJ_NEW_QSTR(MP_QSTR_bitbangio), (mp_obj_t)&bitbangio_module }
     #define EXPRESS_BOARD
 #else
     #define MICROPY_PY_BUILTINS_REVERSED (0)
@@ -230,7 +230,7 @@ extern const struct _mp_obj_module_t usb_hid_module;
     { MP_OBJ_NEW_QSTR(MP_QSTR_struct), (mp_obj_t)&struct_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_supervisor), (mp_obj_t)&supervisor_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_math), (mp_obj_t)&math_module }, \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&time_module },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&time_module }, \
     EXTRA_BUILTIN_MODULES
 
 #define MICROPY_PORT_BUILTIN_DEBUG_MODULES \