diff --git a/ghost/admin/app/controllers/post-settings-menu.js b/ghost/admin/app/controllers/post-settings-menu.js
index e790a5127f..788b0ab518 100644
--- a/ghost/admin/app/controllers/post-settings-menu.js
+++ b/ghost/admin/app/controllers/post-settings-menu.js
@@ -149,8 +149,8 @@ export default Ember.Controller.extend(SettingsMenuMixin, {
         return placeholder;
     }),
 
-    seoURL: Ember.computed('model.slug', function () {
-        var blogUrl = this.get('config').blogUrl,
+    seoURL: Ember.computed('model.slug', 'config.blogUrl', function () {
+        var blogUrl = this.get('config.blogUrl'),
             seoSlug = this.get('model.slug') ? this.get('model.slug') : '',
             seoURL = blogUrl + '/' + seoSlug;