diff --git a/extmod/machine_pwm.c b/extmod/machine_pwm.c
index 220d34d7da..8a633b3793 100644
--- a/extmod/machine_pwm.c
+++ b/extmod/machine_pwm.c
@@ -34,13 +34,11 @@
 #include MICROPY_PY_MACHINE_PWM_INCLUDEFILE
 #endif
 
-#if MICROPY_PY_MACHINE_PWM_INIT
 STATIC mp_obj_t machine_pwm_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
     mp_machine_pwm_init_helper(args[0], n_args - 1, args + 1, kw_args);
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_pwm_init_obj, 1, machine_pwm_init);
-#endif
 
 // PWM.deinit()
 STATIC mp_obj_t machine_pwm_deinit(mp_obj_t self_in) {
@@ -82,8 +80,6 @@ STATIC mp_obj_t machine_pwm_duty(size_t n_args, const mp_obj_t *args) {
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_duty_obj, 1, 2, machine_pwm_duty);
 #endif
 
-#if MICROPY_PY_MACHINE_PWM_DUTY_U16_NS
-
 // PWM.duty_u16([value])
 STATIC mp_obj_t machine_pwm_duty_u16(size_t n_args, const mp_obj_t *args) {
     machine_pwm_obj_t *self = MP_OBJ_TO_PTR(args[0]);
@@ -114,21 +110,15 @@ STATIC mp_obj_t machine_pwm_duty_ns(size_t n_args, const mp_obj_t *args) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pwm_duty_ns_obj, 1, 2, machine_pwm_duty_ns);
 
-#endif
-
 STATIC const mp_rom_map_elem_t machine_pwm_locals_dict_table[] = {
-    #if MICROPY_PY_MACHINE_PWM_INIT
     { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_pwm_init_obj) },
-    #endif
     { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_pwm_deinit_obj) },
     { MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_pwm_freq_obj) },
     #if MICROPY_PY_MACHINE_PWM_DUTY
     { MP_ROM_QSTR(MP_QSTR_duty), MP_ROM_PTR(&machine_pwm_duty_obj) },
     #endif
-    #if MICROPY_PY_MACHINE_PWM_DUTY_U16_NS
     { MP_ROM_QSTR(MP_QSTR_duty_u16), MP_ROM_PTR(&machine_pwm_duty_u16_obj) },
     { MP_ROM_QSTR(MP_QSTR_duty_ns), MP_ROM_PTR(&machine_pwm_duty_ns_obj) },
-    #endif
 };
 STATIC MP_DEFINE_CONST_DICT(machine_pwm_locals_dict, machine_pwm_locals_dict_table);
 
diff --git a/ports/esp32/mpconfigport.h b/ports/esp32/mpconfigport.h
index 807ae23b0c..ea3487bcd8 100644
--- a/ports/esp32/mpconfigport.h
+++ b/ports/esp32/mpconfigport.h
@@ -98,9 +98,7 @@
 #define MICROPY_PY_MACHINE_BITSTREAM        (1)
 #define MICROPY_PY_MACHINE_PULSE            (1)
 #define MICROPY_PY_MACHINE_PWM              (1)
-#define MICROPY_PY_MACHINE_PWM_INIT         (1)
 #define MICROPY_PY_MACHINE_PWM_DUTY         (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS  (1)
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE  "ports/esp32/machine_pwm.c"
 #define MICROPY_PY_MACHINE_I2C              (1)
 #define MICROPY_PY_MACHINE_I2C_TRANSFER_WRITE1 (1)
diff --git a/ports/esp8266/mpconfigport.h b/ports/esp8266/mpconfigport.h
index 54549614e5..12ea3716d4 100644
--- a/ports/esp8266/mpconfigport.h
+++ b/ports/esp8266/mpconfigport.h
@@ -66,9 +66,7 @@
 #define MICROPY_PY_MACHINE_BITSTREAM (1)
 #define MICROPY_PY_MACHINE_PULSE    (1)
 #define MICROPY_PY_MACHINE_PWM      (1)
-#define MICROPY_PY_MACHINE_PWM_INIT (1)
 #define MICROPY_PY_MACHINE_PWM_DUTY (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS  (1)
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE "ports/esp8266/machine_pwm.c"
 #define MICROPY_PY_MACHINE_I2C      (1)
 #define MICROPY_PY_MACHINE_SOFTI2C  (1)
diff --git a/ports/mimxrt/mpconfigport.h b/ports/mimxrt/mpconfigport.h
index b1fdf14f22..1dd7711efe 100644
--- a/ports/mimxrt/mpconfigport.h
+++ b/ports/mimxrt/mpconfigport.h
@@ -83,8 +83,6 @@ uint32_t trng_random_u32(void);
 #define MICROPY_PY_MACHINE_BITSTREAM        (1)
 #define MICROPY_PY_MACHINE_PULSE            (1)
 #define MICROPY_PY_MACHINE_PWM              (1)
-#define MICROPY_PY_MACHINE_PWM_INIT         (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS  (1)
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE  "ports/mimxrt/machine_pwm.c"
 #define MICROPY_PY_MACHINE_I2C              (1)
 #ifndef MICROPY_PY_MACHINE_I2S
diff --git a/ports/nrf/mpconfigport.h b/ports/nrf/mpconfigport.h
index a3ceb023ee..23f7e560dc 100644
--- a/ports/nrf/mpconfigport.h
+++ b/ports/nrf/mpconfigport.h
@@ -197,9 +197,7 @@
 #define MICROPY_PY_MACHINE_SOFT_PWM (0)
 #endif
 
-#define MICROPY_PY_MACHINE_PWM_INIT (1)
 #define MICROPY_PY_MACHINE_PWM_DUTY (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS (1)
 
 #if MICROPY_PY_MACHINE_HW_PWM
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE "ports/nrf/modules/machine/pwm.c"
diff --git a/ports/rp2/mpconfigport.h b/ports/rp2/mpconfigport.h
index 653b51091a..b4487a23d7 100644
--- a/ports/rp2/mpconfigport.h
+++ b/ports/rp2/mpconfigport.h
@@ -114,8 +114,6 @@
 #define MICROPY_PY_MACHINE_BITSTREAM            (1)
 #define MICROPY_PY_MACHINE_PULSE                (1)
 #define MICROPY_PY_MACHINE_PWM                  (1)
-#define MICROPY_PY_MACHINE_PWM_INIT             (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS      (1)
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE      "ports/rp2/machine_pwm.c"
 #define MICROPY_PY_MACHINE_I2C                  (1)
 #define MICROPY_PY_MACHINE_SOFTI2C              (1)
diff --git a/ports/samd/mpconfigport.h b/ports/samd/mpconfigport.h
index 6ed8186ec0..bc1ad3d988 100644
--- a/ports/samd/mpconfigport.h
+++ b/ports/samd/mpconfigport.h
@@ -107,8 +107,6 @@
 #define MICROPY_PY_MACHINE_BITSTREAM        (1)
 #define MICROPY_PY_MACHINE_PULSE            (1)
 #define MICROPY_PY_MACHINE_PWM              (1)
-#define MICROPY_PY_MACHINE_PWM_INIT         (1)
-#define MICROPY_PY_MACHINE_PWM_DUTY_U16_NS  (1)
 #define MICROPY_PY_MACHINE_PWM_INCLUDEFILE  "ports/samd/machine_pwm.c"
 #define MICROPY_PY_MACHINE_PIN_MAKE_NEW     mp_pin_make_new