diff --git a/NAMESPACE b/NAMESPACE
index 4405d0ee..b42bbe89 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -12,6 +12,7 @@ S3method(offset_by,numeric)
 S3method(plot,trans)
 S3method(print,trans)
 S3method(rescale,"NULL")
+S3method(rescale,AsIs)
 S3method(rescale,Date)
 S3method(rescale,POSIXt)
 S3method(rescale,dist)
@@ -19,6 +20,7 @@ S3method(rescale,integer64)
 S3method(rescale,logical)
 S3method(rescale,numeric)
 S3method(rescale_mid,"NULL")
+S3method(rescale_mid,AsIs)
 S3method(rescale_mid,Date)
 S3method(rescale_mid,POSIXt)
 S3method(rescale_mid,dist)
diff --git a/NEWS.md b/NEWS.md
index f3fbfb85..4b51d280 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,6 +4,8 @@
   (@teunbrand, #369).
 * Training on factor data no longer sorts the range after multiple training 
   passes (#383)
+* `rescale(I(x), ...)` and `rescale_mid(I(x), ...)` return `I(x)` unaltered 
+  (@teunbrand, #403).
 
 # scales 1.2.1
 
diff --git a/R/bounds.R b/R/bounds.R
index b66059db..f7bca6e0 100644
--- a/R/bounds.R
+++ b/R/bounds.R
@@ -5,6 +5,9 @@
 #' @param from input range (vector of length two).  If not given, is
 #'   calculated from the range of `x`
 #' @param ... other arguments passed on to methods
+#' @details
+#' Objects of class `<AsIs>` are returned unaltered.
+#'
 #' @keywords manip
 #' @export
 #' @examples
@@ -58,6 +61,9 @@ rescale.integer64 <- function(x, to = c(0, 1), from = range(x, na.rm = TRUE), ..
   (x - from[1]) / diff(from) * diff(to) + to[1]
 }
 
+#' @rdname rescale
+#' @export
+rescale.AsIs <- function(x, to, from, ...) x
 
 #' Rescale vector to have specified minimum, midpoint, and maximum
 #'
@@ -68,6 +74,8 @@ rescale.integer64 <- function(x, to = c(0, 1), from = range(x, na.rm = TRUE), ..
 #'   calculated from the range of `x`
 #' @param mid mid-point of input range
 #' @param ... other arguments passed on to methods
+#' @details
+#' Objects of class `<AsIs>` are returned unaltered.
 #' @examples
 #' rescale_mid(1:100, mid = 50.5)
 #' rescale_mid(runif(50), mid = 0.5)
@@ -129,6 +137,10 @@ rescale_mid.integer64 <- function(x, to = c(0, 1), from = range(x, na.rm = TRUE)
 }
 
 
+#' @rdname rescale_mid
+#' @export
+rescale_mid.AsIs <- function(x, to, from, ...) x
+
 #' Rescale numeric vector to have specified maximum
 #'
 #' @export
diff --git a/man/rescale.Rd b/man/rescale.Rd
index 1383eeea..c41c129e 100644
--- a/man/rescale.Rd
+++ b/man/rescale.Rd
@@ -8,6 +8,7 @@
 \alias{rescale.POSIXt}
 \alias{rescale.Date}
 \alias{rescale.integer64}
+\alias{rescale.AsIs}
 \title{Rescale continuous vector to have specified minimum and maximum}
 \usage{
 rescale(x, to, from, ...)
@@ -23,6 +24,8 @@ rescale(x, to, from, ...)
 \method{rescale}{Date}(x, to = c(0, 1), from = range(x, na.rm = TRUE, finite = TRUE), ...)
 
 \method{rescale}{integer64}(x, to = c(0, 1), from = range(x, na.rm = TRUE), ...)
+
+\method{rescale}{AsIs}(x, to, from, ...)
 }
 \arguments{
 \item{x}{continuous vector of values to manipulate.}
@@ -37,6 +40,9 @@ calculated from the range of \code{x}}
 \description{
 Rescale continuous vector to have specified minimum and maximum
 }
+\details{
+Objects of class \verb{<AsIs>} are returned unaltered.
+}
 \examples{
 rescale(1:100)
 rescale(runif(50))
diff --git a/man/rescale_mid.Rd b/man/rescale_mid.Rd
index c9bf7392..d3133ab0 100644
--- a/man/rescale_mid.Rd
+++ b/man/rescale_mid.Rd
@@ -8,6 +8,7 @@
 \alias{rescale_mid.POSIXt}
 \alias{rescale_mid.Date}
 \alias{rescale_mid.integer64}
+\alias{rescale_mid.AsIs}
 \title{Rescale vector to have specified minimum, midpoint, and maximum}
 \usage{
 rescale_mid(x, to, from, mid, ...)
@@ -23,6 +24,8 @@ rescale_mid(x, to, from, mid, ...)
 \method{rescale_mid}{Date}(x, to = c(0, 1), from = range(x, na.rm = TRUE), mid, ...)
 
 \method{rescale_mid}{integer64}(x, to = c(0, 1), from = range(x, na.rm = TRUE), mid = 0, ...)
+
+\method{rescale_mid}{AsIs}(x, to, from, ...)
 }
 \arguments{
 \item{x}{vector of values to manipulate.}
@@ -39,6 +42,9 @@ calculated from the range of \code{x}}
 \description{
 Rescale vector to have specified minimum, midpoint, and maximum
 }
+\details{
+Objects of class \verb{<AsIs>} are returned unaltered.
+}
 \examples{
 rescale_mid(1:100, mid = 50.5)
 rescale_mid(runif(50), mid = 0.5)