diff --git a/extmod/modbluetooth.c b/extmod/modbluetooth.c
index 1bf2ae6add..c4b9675cef 100644
--- a/extmod/modbluetooth.c
+++ b/extmod/modbluetooth.c
@@ -215,7 +215,9 @@ STATIC mp_int_t bluetooth_uuid_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bu
     return 0;
 }
 
-#if !MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS && MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
+#if !MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
+
+#if MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
 STATIC void ringbuf_put_uuid(ringbuf_t *ringbuf, mp_obj_bluetooth_uuid_t *uuid) {
     assert(ringbuf_free(ringbuf) >= (size_t)uuid->type + 1);
     ringbuf_put(ringbuf, uuid->type);
@@ -223,7 +225,9 @@ STATIC void ringbuf_put_uuid(ringbuf_t *ringbuf, mp_obj_bluetooth_uuid_t *uuid)
         ringbuf_put(ringbuf, uuid->data[i]);
     }
 }
+#endif
 
+#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
 STATIC void ringbuf_get_uuid(ringbuf_t *ringbuf, mp_obj_bluetooth_uuid_t *uuid) {
     assert(ringbuf_avail(ringbuf) >= 1);
     uuid->type = ringbuf_get(ringbuf);
@@ -232,7 +236,9 @@ STATIC void ringbuf_get_uuid(ringbuf_t *ringbuf, mp_obj_bluetooth_uuid_t *uuid)
         uuid->data[i] = ringbuf_get(ringbuf);
     }
 }
-#endif // MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
+#endif
+
+#endif // !MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
 
 const mp_obj_type_t mp_type_bluetooth_uuid = {
     { &mp_type_type },