diff --git a/app/notifications/repository_item_date_notification.rb b/app/notifications/repository_item_date_notification.rb
index 6548ee5f3..8e0993a91 100644
--- a/app/notifications/repository_item_date_notification.rb
+++ b/app/notifications/repository_item_date_notification.rb
@@ -4,7 +4,7 @@ class RepositoryItemDateNotification < BaseNotification
   def message
     unit = human_readable_unit(column.metadata['reminder_unit'], column.metadata['reminder_value'])
     I18n.t(
-      'notifications.notification.item_date_reminder_html',
+      'notifications.content.item_date_reminder.message_html',
       repository_row_name: subject.name,
       value: column.metadata['reminder_value'],
       units: unit
@@ -15,7 +15,9 @@ class RepositoryItemDateNotification < BaseNotification
     :item_date_reminder
   end
 
-  def title; end
+  def title
+    I18n.t('notifications.content.item_date_reminder.title_html')
+  end
 
   def subject
     RepositoryRow.find(params[:repository_row_id])
@@ -36,6 +38,8 @@ class RepositoryItemDateNotification < BaseNotification
   private
 
   def human_readable_unit(seconds, value)
+    return unless seconds
+
     units_hash = {
       '2419200' => 'month',
       '604800' => 'week',
diff --git a/app/notifications/task_due_date_notification.rb b/app/notifications/task_due_date_notification.rb
index 18f8b84f2..39143195f 100644
--- a/app/notifications/task_due_date_notification.rb
+++ b/app/notifications/task_due_date_notification.rb
@@ -12,7 +12,9 @@ class TaskDueDateNotification < BaseNotification
     :my_module_due_date_reminder
   end
 
-  def title; end
+  def title
+    I18n.t('notifications.content.my_module_due_date_reminder.title_html')
+  end
 
   def subject
     MyModule.find(params[:my_module_id])