diff --git a/R/rtools.R b/R/rtools.R
index 95cc932..65162cc 100644
--- a/R/rtools.R
+++ b/R/rtools.R
@@ -188,6 +188,10 @@ rtools <- function(path, version, ...) {
 }
 is.rtools <- function(x) inherits(x, "rtools")
 
+#' Retrieve a text string with the rtools version needed
+#'
+#' @keywords internal
+#' @export
 rtools_needed <- function() {
   r_version <- getRversion()
 
diff --git a/man/rtools_needed.Rd b/man/rtools_needed.Rd
new file mode 100644
index 0000000..9b228cc
--- /dev/null
+++ b/man/rtools_needed.Rd
@@ -0,0 +1,12 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/rtools.R
+\name{rtools_needed}
+\alias{rtools_needed}
+\title{Retrieve a text string with the rtools version needed}
+\usage{
+rtools_needed()
+}
+\description{
+Retrieve a text string with the rtools version needed
+}
+\keyword{internal}