diff --git a/src/Form/IslandoraSettingsForm.php b/src/Form/IslandoraSettingsForm.php
index 8d0ae36f..0ebc0b3c 100644
--- a/src/Form/IslandoraSettingsForm.php
+++ b/src/Form/IslandoraSettingsForm.php
@@ -34,6 +34,7 @@ class IslandoraSettingsForm extends ConfigFormBase {
     'min',
     'minute',
     'hour',
+    'day',
     'week',
     'month',
     'year',