diff --git a/README.md b/README.md
index 0946993..7e12252 100644
--- a/README.md
+++ b/README.md
@@ -162,7 +162,7 @@ update-ca-certificates
 * installer nix
 
 ~~~
-chown -R nix /nix
+chown -R nix /nix /tmp
 su - nix
 bash <(curl https://nixos.org/nix/install)
 exit