diff --git a/ranger-r-package/ranger/R/predict.R b/ranger-r-package/ranger/R/predict.R
index e5cecfced..89bd6d5fa 100644
--- a/ranger-r-package/ranger/R/predict.R
+++ b/ranger-r-package/ranger/R/predict.R
@@ -225,6 +225,9 @@ predict.ranger.forest <- function(object, data, predict.all = FALSE,
 }
 
 ##' Prediction with new data and a saved forest from Ranger.
+##' 
+##' For classification and predict.all = TRUE, a matrix of factor levels is returned. 
+##' To retrieve the corresponding factor levels, use rf$forest$levels, if rf is the ranger object.
 ##'
 ##' @title Ranger prediction
 ##' @param object Ranger \code{ranger} object.
diff --git a/ranger-r-package/ranger/man/predict.ranger.Rd b/ranger-r-package/ranger/man/predict.ranger.Rd
index 5734d9a85..d1052449f 100644
--- a/ranger-r-package/ranger/man/predict.ranger.Rd
+++ b/ranger-r-package/ranger/man/predict.ranger.Rd
@@ -38,6 +38,10 @@ Object of class \code{ranger.prediction} with elements
 \description{
 Prediction with new data and a saved forest from Ranger.
 }
+\details{
+For classification and predict.all = TRUE, a matrix of factor levels is returned.
+To retrieve the corresponding factor levels, use rf$forest$levels, if rf is the ranger object.
+}
 \author{
 Marvin N. Wright
 }