diff --git a/roles/user/tmpfiles/defaults/main.yml b/roles/user/tmpfiles/defaults/main.yml
index 0c538c0..4b618a8 100644
--- a/roles/user/tmpfiles/defaults/main.yml
+++ b/roles/user/tmpfiles/defaults/main.yml
@@ -1,2 +1,4 @@
 ---
+# Retention period for the custom tmpfiles, see ‹Age› in tmpfiles.d(5) for more
+# information
 user_tmpfiles_retention: "7d"