diff --git a/helper.sh b/helper.sh
index 272bcd4..d40ef50 100755
--- a/helper.sh
+++ b/helper.sh
@@ -54,7 +54,7 @@ case "$1" in
 		enable_venv "$2"
 		mkdir -pv "$R_LIBS_SITE"
 		if command -v Rscript >> /dev/null; then
-			Rscript -e 'install.packages("IRkernel",repos="http://cran.r-project.org");library(IRkernel);IRkernel::installspec()'
+			Rscript -e "install.packages('IRkernel','$R_LIBS_SITE','http://cran.r-project.org');library(IRkernel);IRkernel::installspec()"
 		else
 			echo "R isn't installed"
 			exit 1