diff --git a/config.org b/config.org
index 088fcb6..4f72c16 100644
--- a/config.org
+++ b/config.org
@@ -856,7 +856,9 @@ which
 #+end_src
 *** Set as default shell
 #+begin_src shell :tangle update.sh
-chsh-s $(which zsh)
+if [ "$(basename "$SHELL")" != "zsh" ]; then
+    chsh $(which zsh)
+fi
 #+end_src
 *** [[https://ohmyz.sh/][Oh-My-Zsh]]
 **** Installation