diff --git a/man/backup.d.5 b/man/backup.d.5
index 5178067..234b270 100644
--- a/man/backup.d.5
+++ b/man/backup.d.5
@@ -81,6 +81,7 @@ For example:
   when = manual
 
 These values for "when" are invalid:
+  when = everyday at 5:00
   when = tuesday at 2am
   when = tuesday at 2
   when = tues at 02