diff --git a/app/assets/javascripts/discourse/models/topic.js b/app/assets/javascripts/discourse/models/topic.js
index 9a32ada28..badaca103 100644
--- a/app/assets/javascripts/discourse/models/topic.js
+++ b/app/assets/javascripts/discourse/models/topic.js
@@ -144,6 +144,7 @@ Discourse.Topic = Discourse.Model.extend({
   archetypeObject: function() {
     return Discourse.Site.currentProp('archetypes').findProperty('id', this.get('archetype'));
   }.property('archetype'),
+
   isPrivateMessage: Em.computed.equal('archetype', 'private_message'),
 
   toggleStatus: function(property) {
diff --git a/app/assets/javascripts/discourse/templates/topic.js.handlebars b/app/assets/javascripts/discourse/templates/topic.js.handlebars
index 92eb53918..fbf19bce0 100644
--- a/app/assets/javascripts/discourse/templates/topic.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/topic.js.handlebars
@@ -12,7 +12,9 @@
           {{/if}}
 
           {{#if editingTopic}}
-            {{categoryChooser valueAttribute="id" value=newCategoryId source=category_id}}
+            {{#unless isPrivateMessage}}
+              {{categoryChooser valueAttribute="id" value=newCategoryId source=category_id}}
+            {{/unless}}
             {{textField id='edit-title' value=newTitle}}
 
             <button class='btn btn-primary btn-small' {{action finishedEditingTopic}}><i class='fa fa-check'></i></button>