diff --git a/upstart-jobs/atd.nix b/upstart-jobs/atd.nix
index 310477d1994..59fd4789148 100644
--- a/upstart-jobs/atd.nix
+++ b/upstart-jobs/atd.nix
@@ -40,7 +40,7 @@ start script
    do
      if [ ! -d "$dir" ]
      then
-         mkdir "$dir" && chown atd:atd "$dir"
+         mkdir -p "$dir" && chown atd:atd "$dir"
      fi
    done
    chmod 1770 "$spooldir" "$jobdir"