diff --git a/README.md b/README.md
index be3ff4c..66765b1 100644
--- a/README.md
+++ b/README.md
@@ -329,7 +329,7 @@ Default is:
     monthly    => {
       minute   => '0..59',
       hour     => '0..23',      # you could also do:   ['21..23','0..4','5'],
-      monthday => '0..28',
+      monthday => '1..28',
       month    => '*',
       weekday  => '*',
     },