diff --git a/app/assets/stylesheets/mobile/topic-post.scss b/app/assets/stylesheets/mobile/topic-post.scss
index d4f4540d4..669c57166 100644
--- a/app/assets/stylesheets/mobile/topic-post.scss
+++ b/app/assets/stylesheets/mobile/topic-post.scss
@@ -338,7 +338,7 @@ span.post-count {
 
 .topic-post {
   &.moderator {
-    background-color: scale-color($highlight, $lightness: 75%);
+    background-color: dark-light-diff($highlight, $secondary, 70%, -80%);
   }
 }
 
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index d3ec46885..f78c41590 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -1824,6 +1824,7 @@ en:
 
     digest:
       why: "A brief summary of %{site_link} since your last visit on %{last_seen_at}"
+      subject_template: "[%{site_name}] Digest"
       new_activity: "New activity on your topics and posts:"
       top_topics: "Popular posts"
       other_new_topics: "Popular topics"