diff --git a/runner/flake.nix b/runner/flake.nix
index 645a1f4..d76b95c 100644
--- a/runner/flake.nix
+++ b/runner/flake.nix
@@ -51,7 +51,7 @@
           # Skeleton filesystem layout: /tmp, /etc/passwd for nix,
           # writable nix store, cacert pointer.
           extraCommands = ''
-            mkdir -p tmp etc nix/var/{nix,log/nix} root
+            mkdir -p tmp etc/nix nix/var/{nix,log/nix} root
             chmod 1777 tmp
 
             cat > etc/passwd <<'EOF'