diff --git a/pkg_building.Rmd b/pkg_building.Rmd
index 93414cfe9..1a13614f0 100644
--- a/pkg_building.Rmd
+++ b/pkg_building.Rmd
@@ -252,7 +252,7 @@ f <- function(a = TRUE) {
 
 - For including examples, you can use the classic `@examples` tag (plural "examples") but also the  `@example <path>` tag (singular "example") for storing the example code in a separate R script (ideally under `man/`), and the `@exampleIf` tag for running examples conditionally and avoiding R CMD check failures. Refer to [roxygen2 documentation about examples](https://roxygen2.r-lib.org/articles/rd.html#examples).
 
-- Add `#' @noRd` to internal functions. You might be interested in the [devtag experimental package](https://github.com/moodymudskipper/devtag) for getting local manual pages when using `#' @noRd`.
+- Add `#' @keywords internal` to flag the function as internal while generating documentation for it. If you do not want any function documentation generated at all, use `#' noRd` instead. Refer to [`roxygen2` documentation about tags for indexing and cross-referencing](https://roxygen2.r-lib.org/reference/tags-index-crossref.html) and [tags for documenting functions](https://roxygen2.r-lib.org/reference/tags-rd.html). For development purposes, you might be interested in the [devtag experimental package](https://github.com/moodymudskipper/devtag) for getting local manual pages when using `#' @noRd`.
 
 - Starting from roxygen2 version 7.0.0, `R6` classes are officially supported. See the [roxygen2 docs](https://roxygen2.r-lib.org/articles/rd-other.html#r6) for details on how to document `R6` classes.