diff --git a/app/assets/javascripts/discourse/controllers/discovery/topics.js.es6 b/app/assets/javascripts/discourse/controllers/discovery/topics.js.es6
index 0a2b0462378..775aa1690bf 100644
--- a/app/assets/javascripts/discourse/controllers/discovery/topics.js.es6
+++ b/app/assets/javascripts/discourse/controllers/discovery/topics.js.es6
@@ -2,6 +2,7 @@ import DiscoveryController from 'discourse/controllers/discovery';
 import { queryParams } from 'discourse/controllers/discovery-sortable';
 import BulkTopicSelection from 'discourse/mixins/bulk-topic-selection';
 import { endWith } from 'discourse/lib/computed';
+import showModal from 'discourse/lib/show-modal';
 
 const controllerOpts = {
   needs: ['discovery'],
@@ -66,10 +67,13 @@ const controllerOpts = {
       });
     },
 
-
     resetNew() {
       this.topicTrackingState.resetNew();
       Discourse.Topic.resetNew().then(() => this.send('refresh'));
+    },
+
+    dismissReadPosts() {
+      showModal('dismiss-read', { title: 'topics.bulk.dismiss' });
     }
   },
 
diff --git a/app/assets/javascripts/discourse/mixins/bulk-topic-selection.js.es6 b/app/assets/javascripts/discourse/mixins/bulk-topic-selection.js.es6
index c0e7650d8b6..705f281a353 100644
--- a/app/assets/javascripts/discourse/mixins/bulk-topic-selection.js.es6
+++ b/app/assets/javascripts/discourse/mixins/bulk-topic-selection.js.es6
@@ -42,6 +42,7 @@ export default Ember.Mixin.create({
           });
           tracker.incrementMessageCount();
         }
+        self.send('closeModal');
         self.send('refresh');
       });
     }
diff --git a/app/assets/javascripts/discourse/routes/discovery.js.es6 b/app/assets/javascripts/discourse/routes/discovery.js.es6
index 83b5b4186b4..12b3e1f180c 100644
--- a/app/assets/javascripts/discourse/routes/discovery.js.es6
+++ b/app/assets/javascripts/discourse/routes/discovery.js.es6
@@ -46,6 +46,10 @@ const DiscoveryRoute = Discourse.Route.extend(OpenComposer, {
 
     createTopic() {
       this.openComposer(this.controllerFor("discovery/topics"));
+    },
+
+    dismissRead(operationType) {
+      this.controllerFor("discovery/topics").send('dismissRead', operationType);
     }
   }
 
diff --git a/app/assets/javascripts/discourse/templates/discovery/topics.hbs b/app/assets/javascripts/discourse/templates/discovery/topics.hbs
index b57679afc79..8af62789372 100644
--- a/app/assets/javascripts/discourse/templates/discovery/topics.hbs
+++ b/app/assets/javascripts/discourse/templates/discovery/topics.hbs
@@ -5,8 +5,7 @@
 {{#if showDismissAtTop}}
   <div class="row">
     {{#if showDismissRead}}
-      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics-top' class='btn dismiss-read' {{action "dismissRead" "topics"}}>{{i18n 'topics.bulk.dismiss_topics'}}</button>
-      <button title="{{i18n 'topics.bulk.dismiss_posts_tooltip'}}" id='dismiss-posts-top' class='btn dismiss-read' {{action "dismissRead" "posts"}}>{{i18n 'topics.bulk.dismiss_posts'}}</button>
+      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics-top' class='btn dismiss-read' {{action "dismissReadPosts"}}>{{i18n 'topics.bulk.dismiss'}}</button>
     {{/if}}
     {{#if showResetNew}}
       <button id='dismiss-new-top' class='btn dismiss-read' {{action "resetNew"}}>{{i18n 'topics.bulk.dismiss_new'}}</button>
@@ -55,8 +54,7 @@
   {{conditional-loading-spinner condition=model.loadingMore}}
   {{#if allLoaded}}
     {{#if showDismissRead}}
-      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics' class='btn dismiss-read' {{action "dismissRead" "topics"}}>{{i18n 'topics.bulk.dismiss_topics'}}</button>
-      <button title="{{i18n 'topics.bulk.dismiss_posts_tooltip'}}" id='dismiss-posts' class='btn dismiss-read' {{action "dismissRead" "posts"}}>{{i18n 'topics.bulk.dismiss_posts'}}</button>
+      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics' class='btn dismiss-read' {{action "dismissReadPosts"}}>{{i18n 'topics.bulk.dismiss'}}</button>
     {{/if}}
     {{#if showResetNew}}
       <button id='dismiss-new' class='btn dismiss-read' {{action "resetNew"}}>{{i18n 'topics.bulk.dismiss_new'}}</button>
diff --git a/app/assets/javascripts/discourse/templates/mobile/discovery/topics.hbs b/app/assets/javascripts/discourse/templates/mobile/discovery/topics.hbs
index ae964b46e39..a58ce372e7f 100644
--- a/app/assets/javascripts/discourse/templates/mobile/discovery/topics.hbs
+++ b/app/assets/javascripts/discourse/templates/mobile/discovery/topics.hbs
@@ -25,8 +25,7 @@
   {{conditional-loading-spinner condition=model.loadingMore}}
   {{#if allLoaded}}
     {{#if showDismissRead}}
-      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics' class='btn dismiss-read' {{action "dismissRead" "topics"}}>{{i18n 'topics.bulk.dismiss_topics'}}</button>
-      <button title="{{i18n 'topics.bulk.dismiss_posts_tooltip'}}" id='dismiss-posts' class='btn dismiss-read' {{action "dismissRead" "posts"}}>{{i18n 'topics.bulk.dismiss_posts'}}</button>
+      <button title="{{i18n 'topics.bulk.dismiss_topics_tooltip'}}" id='dismiss-topics' class='btn dismiss-read' {{action "dismissReadPosts"}}>{{i18n 'topics.bulk.dismiss'}}</button>
     {{/if}}
     {{#if showResetNew}}
       <button id='dismiss-new' class='btn dismiss-read' {{action "resetNew"}}>{{i18n 'topics.bulk.dismiss_new'}}</button>
diff --git a/app/assets/javascripts/discourse/templates/modal/dismiss-read.hbs b/app/assets/javascripts/discourse/templates/modal/dismiss-read.hbs
new file mode 100644
index 00000000000..9136970027c
--- /dev/null
+++ b/app/assets/javascripts/discourse/templates/modal/dismiss-read.hbs
@@ -0,0 +1,10 @@
+<div class="modal-body">
+  <p>
+    {{i18n 'topics.bulk.dismiss_body'}}
+  </p>
+</div>
+
+<div class="modal-footer">
+  <button class='btn btn-primary' {{action "dismissRead" "posts"}}>{{i18n 'topics.bulk.dismiss_posts'}}</button>
+  <button class='btn btn-primary' {{action "dismissRead" "topics"}}>{{i18n 'topics.bulk.dismiss_topics'}}</button>
+</div>
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 00c9a6b4a41..49da8b6a5b2 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -1010,10 +1010,10 @@ en:
       bulk:
         reset_read: "Reset Read"
         delete: "Delete Topics"
-        dismiss_posts: "Dismiss Posts"
-        dismiss_posts_tooltip: "Clear unread counts on these topics but continue to show them on my unread list when new posts are made"
+        dismiss: "Dismiss"
+        dismiss_body: "Would you like to dismiss just the new posts in these topics, or dismiss the topics entirely?"
+        dismiss_posts: "Dismiss Just New Posts"
         dismiss_topics: "Dismiss Topics"
-        dismiss_topics_tooltip: "Stop showing these topics in my unread list when new posts are made"
         dismiss_new: "Dismiss New"
         toggle: "toggle bulk selection of topics"
         actions: "Bulk Actions"