public function validate_upload( $file = array() ) {
		// Bail if already an error.
		if ( ! empty( $file['error'] ) ) {
			return $file;
		}

		// File size is too big.
		if ( $file['size'] > $this->original_max_filesize ) {
			$file['error'] = 11;

		// File is of invalid type.
		} elseif ( ! bp_attachments_check_filetype( $file['tmp_name'], $file['name'], bp_attachments_get_allowed_mimes( 'cover_image' ) ) ) {
			$file['error'] = 12;
		}

		// Return with error code attached.
		return $file;
	}