diff --git a/py/stream.c b/py/stream.c
index 36325e7d41..d099c82387 100644
--- a/py/stream.c
+++ b/py/stream.c
@@ -472,7 +472,7 @@ STATIC mp_obj_t stream_tell(mp_obj_t self) {
 }
 MP_DEFINE_CONST_FUN_OBJ_1(mp_stream_tell_obj, stream_tell);
 
-STATIC mp_obj_t stream_flush(mp_obj_t self) {
+mp_obj_t mp_stream_flush(mp_obj_t self) {
     const mp_stream_p_t *stream_p = mp_get_stream(self);
     int error;
     mp_uint_t res = stream_p->ioctl(self, MP_STREAM_FLUSH, 0, &error);
diff --git a/py/stream.h b/py/stream.h
index d71b669e90..e776d8d5d1 100644
--- a/py/stream.h
+++ b/py/stream.h
@@ -120,6 +120,7 @@ mp_uint_t mp_stream_rw(mp_obj_t stream, void *buf, mp_uint_t size, int *errcode,
 #define mp_stream_read_exactly(stream, buf, size, err) mp_stream_rw(stream, buf, size, err, MP_STREAM_RW_READ)
 
 void mp_stream_write_adaptor(void *self, const char *buf, size_t len);
+mp_obj_t mp_stream_flush(mp_obj_t self); // CIRCUITPY
 
 #if MICROPY_STREAMS_POSIX_API
 #include <sys/types.h>