StackRduino
diff --git a/‎shared-bindings/displayio/Display.c‎
Lines changed: 2 additions & 2 deletions b/‎shared-bindings/displayio/Display.c‎
Lines changed: 2 additions & 2 deletions
@@ -389,12 +389,12 @@ STATIC mp_obj_t displayio_display_obj_fill_row(size_t n_args, const mp_obj_t *po
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
     displayio_display_obj_t *self = native_display(pos_args[0]);
     mp_int_t y = args[ARG_y].u_int;
-    mp_obj_array_t *result = args[ARG_buffer].u_obj;
+    mp_obj_t *result = args[ARG_buffer].u_obj;
 
     mp_buffer_info_t bufinfo;
     mp_get_buffer_raise(result, &bufinfo, MP_BUFFER_WRITE);
 
-    if (result->typecode != BYTEARRAY_TYPECODE) {
+    if (bufinfo.typecode != BYTEARRAY_TYPECODE) {
       mp_raise_ValueError(translate("Buffer is not a bytearray."));
     }
     if (self->colorspace.depth != 16) {