diff --git a/profiles/package.mask b/profiles/package.mask
index d165c7e..7fd4070 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -1,3 +1,4 @@
+# systemd is masked in without-systemd overlay
 sys-apps/systemd
 sys-apps/systemd-tmpfiles
 sys-apps/systemd-utils
diff --git a/profiles/package.unmask b/profiles/package.unmask
new file mode 100644
index 0000000..597e10d
--- /dev/null
+++ b/profiles/package.unmask
@@ -0,0 +1 @@
+sys-apps/opentmpfiles