diff --git a/shared-bindings/usb_midi/PortIn.c b/shared-bindings/usb_midi/PortIn.c
index 6177cfa8d7..356a81d52c 100644
--- a/shared-bindings/usb_midi/PortIn.c
+++ b/shared-bindings/usb_midi/PortIn.c
@@ -43,16 +43,12 @@
 //|
 //| .. class:: PortIn()
 //|
-//|   Not currently dynamically supported.
+//|   You cannot create an instance of `usb_midi.PortIn`.
 //|
-//|   PortIn objects are constructed for every corresponding entry in the USB descriptor and added
-//|   to the ``usb_midi.ports`` tuple.
+//|   PortIn objects are constructed for every corresponding entry in the USB
+//|   descriptor and added to the ``usb_midi.ports`` tuple.
 //|
 
-STATIC mp_obj_t usb_midi_portin_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-    return mp_const_none;
-}
-
 // These are standard stream methods. Code is in py/stream.c.
 //
 //|   .. method:: read(nbytes=None)
@@ -120,7 +116,6 @@ STATIC const mp_stream_p_t usb_midi_portin_stream_p = {
 const mp_obj_type_t usb_midi_portin_type = {
     { &mp_type_type },
     .name = MP_QSTR_PortIn,
-    .make_new = usb_midi_portin_make_new,
     .getiter = mp_identity_getiter,
     .iternext = mp_stream_unbuffered_iter,
     .protocol = &usb_midi_portin_stream_p,
diff --git a/shared-bindings/usb_midi/PortIn.h b/shared-bindings/usb_midi/PortIn.h
index 89bb59b712..58d017fa02 100644
--- a/shared-bindings/usb_midi/PortIn.h
+++ b/shared-bindings/usb_midi/PortIn.h
@@ -31,9 +31,6 @@
 
 extern const mp_obj_type_t usb_midi_portin_type;
 
-// Construct an underlying UART object.
-extern void common_hal_usb_midi_portin_construct(usb_midi_portin_obj_t *self,
-    uint8_t receiver_buffer_size);
 // Read characters.
 extern size_t common_hal_usb_midi_portin_read(usb_midi_portin_obj_t *self,
     uint8_t *data, size_t len, int *errcode);
diff --git a/shared-bindings/usb_midi/PortOut.c b/shared-bindings/usb_midi/PortOut.c
index e8cea56e86..6f4ce67165 100644
--- a/shared-bindings/usb_midi/PortOut.c
+++ b/shared-bindings/usb_midi/PortOut.c
@@ -43,16 +43,12 @@
 //|
 //| .. class:: PortOut()
 //|
-//|   Not currently dynamically supported.
+//|   You cannot create an instance of `usb_midi.PortOut`.
 //|
-//|   PortOut objects are constructed for every corresponding entry in the USB descriptor and added
-//|   to the ``usb_midi.ports`` tuple.
+//|   PortOut objects are constructed for every corresponding entry in the USB
+//|   descriptor and added to the ``usb_midi.ports`` tuple.
 //|
 
-STATIC mp_obj_t usb_midi_portout_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-    return mp_const_none;
-}
-
 // These are standard stream methods. Code is in py/stream.c.
 //
 //|   .. method:: write(buf)
@@ -102,7 +98,6 @@ STATIC const mp_stream_p_t usb_midi_portout_stream_p = {
 const mp_obj_type_t usb_midi_portout_type = {
     { &mp_type_type },
     .name = MP_QSTR_PortOut,
-    .make_new = usb_midi_portout_make_new,
     .getiter = mp_identity_getiter,
     .iternext = mp_stream_unbuffered_iter,
     .protocol = &usb_midi_portout_stream_p,
diff --git a/shared-bindings/usb_midi/PortOut.h b/shared-bindings/usb_midi/PortOut.h
index dd42d7cdb9..1eac2fa985 100644
--- a/shared-bindings/usb_midi/PortOut.h
+++ b/shared-bindings/usb_midi/PortOut.h
@@ -31,10 +31,6 @@
 
 extern const mp_obj_type_t usb_midi_portout_type;
 
-// Construct an underlying UART object.
-extern void common_hal_usb_midi_portout_construct(usb_midi_portout_obj_t *self,
-    uint8_t receiver_buffer_size);
-
 // Write characters. len is in characters NOT bytes!
 extern size_t common_hal_usb_midi_portout_write(usb_midi_portout_obj_t *self,
                               const uint8_t *data, size_t len, int *errcode);
diff --git a/shared-module/usb_midi/PortIn.c b/shared-module/usb_midi/PortIn.c
index b256c59370..31e320baab 100644
--- a/shared-module/usb_midi/PortIn.c
+++ b/shared-module/usb_midi/PortIn.c
@@ -28,9 +28,6 @@
 #include "supervisor/shared/translate.h"
 #include "tusb.h"
 
-void common_hal_usb_midi_portin_construct(usb_midi_portin_obj_t *self, uint8_t receiver_buffer_size) {
-}
-
 size_t common_hal_usb_midi_portin_read(usb_midi_portin_obj_t *self, uint8_t *data, size_t len, int *errcode) {
     return tud_midi_read(data, len);
 }
diff --git a/shared-module/usb_midi/PortOut.c b/shared-module/usb_midi/PortOut.c
index 3b9998c73a..99a4fad438 100644
--- a/shared-module/usb_midi/PortOut.c
+++ b/shared-module/usb_midi/PortOut.c
@@ -28,9 +28,6 @@
 #include "supervisor/shared/translate.h"
 #include "tusb.h"
 
-void common_hal_usb_midi_portout_construct(usb_midi_portout_obj_t *self) {
-}
-
 size_t common_hal_usb_midi_portout_write(usb_midi_portout_obj_t *self, const uint8_t *data, size_t len, int *errcode) {
     return tud_midi_write(0, data, len);
 }