diff --git a/host_vars/l460.yml b/host_vars/l460.yml
index b580398..0d17ebd 100644
--- a/host_vars/l460.yml
+++ b/host_vars/l460.yml
@@ -13,7 +13,7 @@ admins:
   - lilian
 
 base__additional_user_bashrc_lines:
-  - [[ $- == *i* ]] && eval $(keychain --eval --quiet id_ed25519)
+  - '[[ $- == *i* ]] && eval $(keychain --eval --quiet id_ed25519)'
 
 # used to automatically generate correct admin keys
 admins_ssh_root_prefix: