diff --git a/app/assets/javascripts/discourse/app/initializers/topic-footer-buttons.js b/app/assets/javascripts/discourse/app/initializers/topic-footer-buttons.js
index a13ccd2219f..e00c947310e 100644
--- a/app/assets/javascripts/discourse/app/initializers/topic-footer-buttons.js
+++ b/app/assets/javascripts/discourse/app/initializers/topic-footer-buttons.js
@@ -3,6 +3,13 @@ import showModal from "discourse/lib/show-modal";
 import { registerTopicFooterButton } from "discourse/lib/register-topic-footer-button";
 import { formattedReminderTime } from "discourse/lib/bookmark";
 
+const SHARE_PRIORITY = 1000;
+const BOOKMARK_PRIORITY = 900;
+const ARCHIVE_PRIORITY = 800;
+const FLAG_PRIORITY = 700;
+const EDIT_MESSAGE_PRIORITY = 600;
+const DEFER_PRIORITY = 500;
+
 export default {
   name: "topic-footer-buttons",
 
@@ -11,8 +18,12 @@ export default {
     registerTopicFooterButton({
       id: "share-and-invite",
       icon: "link",
-      priority: 999,
-      label: "topic.share.title",
+      priority: SHARE_PRIORITY,
+      label() {
+        if (!this.get("topic.isPrivateMessage") || this.site.mobileView) {
+          return "topic.share.title";
+        }
+      },
       title: "topic.share.help",
       action() {
         const panels = [
@@ -67,7 +78,7 @@ export default {
     registerTopicFooterButton({
       id: "flag",
       icon: "flag",
-      priority: 998,
+      priority: FLAG_PRIORITY,
       label: "topic.flag_topic.title",
       title: "topic.flag_topic.help",
       action: "showFlagTopic",
@@ -93,14 +104,16 @@ export default {
         }
         return "bookmark";
       },
-      priority: 1000,
+      priority: BOOKMARK_PRIORITY,
       classNames() {
         const bookmarked = this.get("topic.bookmarked");
         return bookmarked ? ["bookmark", "bookmarked"] : ["bookmark"];
       },
       label() {
-        const bookmarked = this.get("topic.bookmarked");
-        return bookmarked ? "bookmarked.clear_bookmarks" : "bookmarked.title";
+        if (!this.get("topic.isPrivateMessage") || this.site.mobileView) {
+          const bookmarked = this.get("topic.bookmarked");
+          return bookmarked ? "bookmarked.clear_bookmarks" : "bookmarked.title";
+        }
       },
       translatedTitle() {
         const bookmarked = this.get("topic.bookmarked");
@@ -126,7 +139,7 @@ export default {
 
     registerTopicFooterButton({
       id: "archive",
-      priority: 996,
+      priority: ARCHIVE_PRIORITY,
       icon() {
         return this.archiveIcon;
       },
@@ -155,7 +168,7 @@ export default {
 
     registerTopicFooterButton({
       id: "edit-message",
-      priority: 750,
+      priority: EDIT_MESSAGE_PRIORITY,
       icon: "pencil-alt",
       label: "topic.edit_message.title",
       title: "topic.edit_message.help",
@@ -170,7 +183,7 @@ export default {
     registerTopicFooterButton({
       id: "defer",
       icon: "circle",
-      priority: 300,
+      priority: DEFER_PRIORITY,
       label: "topic.defer.title",
       title: "topic.defer.help",
       action: "deferTopic",