diff --git a/singleuser/Dockerfile-R b/singleuser/Dockerfile-R
index c26d23f..5b1c0f7 100644
--- a/singleuser/Dockerfile-R
+++ b/singleuser/Dockerfile-R
@@ -113,4 +113,4 @@ RUN conda clean --all -f -y && \
     fix-permissions /home/$NB_USER
 
 USER $NB_UID
-R
+CMD R
\ No newline at end of file