diff --git a/nrf5/pwm.c b/nrf5/pwm.c
index b38f3d612f..2f646d2f11 100644
--- a/nrf5/pwm.c
+++ b/nrf5/pwm.c
@@ -42,11 +42,6 @@
 #include "hal_pwm.h"
 #endif
 
-typedef struct _pyb_pwm_obj_t {
-    mp_obj_base_t base;
-    PWM_HandleTypeDef *pwm;
-} pyb_pwm_obj_t;
-
 #ifdef MICROPY_HW_PWM0_NAME
 PWM_HandleTypeDef PWMHandle0 = {.instance = NULL};
 #endif
@@ -236,11 +231,6 @@ STATIC MP_DEFINE_CONST_DICT(machine_pwm_locals_dict, machine_pwm_locals_dict_tab
 
 /* code for hard implementation ***********************************************/
 
-typedef struct _machine_hard_pwm_obj_t {
-    mp_obj_base_t base;
-    const pyb_pwm_obj_t *pyb;
-} machine_hard_pwm_obj_t;
-
 STATIC const machine_hard_pwm_obj_t machine_hard_pwm_obj[] = {
     {{&machine_hard_pwm_type}, &machine_pwm_obj[0]},
 };
diff --git a/nrf5/pwm.h b/nrf5/pwm.h
index c79668520d..fe4e26c895 100644
--- a/nrf5/pwm.h
+++ b/nrf5/pwm.h
@@ -24,6 +24,18 @@
  * THE SOFTWARE.
  */
 
+#include "hal_pwm.h"
+
+typedef struct _pyb_pwm_obj_t {
+    mp_obj_base_t base;
+    PWM_HandleTypeDef *pwm;
+} pyb_pwm_obj_t;
+
+typedef struct _machine_hard_pwm_obj_t {
+    mp_obj_base_t base;
+    const pyb_pwm_obj_t *pyb;
+} machine_hard_pwm_obj_t;
+
 void pwm_init0(void);
 
 extern const mp_obj_type_t machine_hard_pwm_type;