diff --git a/Makefile b/Makefile
index 28a289ac6..3230661d4 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,8 @@ Rpack:
 	rm -rf xgboost/inst/examples/*.model
 	rm -rf xgboost/inst/examples/dump*
 	rm -rf xgboost/src/*.o xgboost/src/*.so xgboost/src/*.dll
-	rm -rf xgboost/demo/*.model xgboost/demo/*.buffer
+	rm -rf xgboost/demo/*.model xgboost/demo/*.buffer xgboost/demo/*.txt
+	rm -rf xgboost/demo/runall.R
 	cp -r src xgboost/src/src
 	mkdir xgboost/src/wrapper
 	cp  wrapper/xgboost_wrapper.h xgboost/src/wrapper