diff --git a/_bashrc b/_bashrc
index f51f3d6..4b7efe5 100755
--- a/_bashrc
+++ b/_bashrc
@@ -24,6 +24,10 @@ mkcd() {
     cd "$1"
 }
 
+if [ "$PREFERRED_SHELL" = zsh ] && command -v ls > /dev/null; then
+    exec zsh
+fi
+
 export PS1="
 $(tput bold)$(tput setaf 1)[$(tput setaf 3)\u$(tput setaf 2)@$(tput setaf 4)\H $(tput setaf 5)\w$(tput setaf 1)]$(tput setaf 7)
 $ $(tput sgr0)"
diff --git a/_zshrc b/_zshrc
index dda566f..c23809d 100755
--- a/_zshrc
+++ b/_zshrc
@@ -30,6 +30,7 @@ function zle-keymap-select {
 }
 zle -N zle-keymap-select
 
+unset PREFERRED_SHELL
 [ -f "$HOME/./config/bashrc" ] && emulate sh -c "source $HOME/./config/bashrc"
 [ -f "$HOME/.bashrc" ] && emulate sh -c "source $HOME/.bashrc"
 
diff --git a/flake.nix b/flake.nix
index dbf71a3..3a7c82c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -114,6 +114,7 @@
           # Environment variables only for this user/session
           home.sessionVariables = {
             EDITOR = "nvim";
+            PREFERRED_SHELL = "zsh";
           };
 
           # Good HM hygiene