diff --git a/R-package/README.md b/R-package/README.md
index 1781e3cb8..7d2be411d 100644
--- a/R-package/README.md
+++ b/R-package/README.md
@@ -17,4 +17,4 @@ install.packages('xgboost')
 ## Examples
 
 * Please visit [walk through example](demo).
-* See also the [example scripts](../demo/kaggle-higgs) for Kaggle Higgs Challenge, including [speedtest script](../demo/kaggle-higgs/speedtest.R) on this dataset.
+* See also the [example scripts](../demo/kaggle-higgs) for Kaggle Higgs Challenge, including [speedtest script](../demo/kaggle-higgs/speedtest.R) on this dataset and the one related to [Otto challenge](../demo/kaggle-otto), including a [RMarkdown documentation](../demo/kaggle-otto/understandingXGBoostModel.Rmd).