diff --git a/core/server/models/post.js b/core/server/models/post.js
index 1deb5640ea..66de0722c4 100644
--- a/core/server/models/post.js
+++ b/core/server/models/post.js
@@ -11,8 +11,7 @@ var _              = require('lodash'),
     ghostBookshelf = require('./base'),
 
     Post,
-    Posts,
-    myTags;
+    Posts;
 
 Post = ghostBookshelf.Model.extend({
 
@@ -50,7 +49,7 @@ Post = ghostBookshelf.Model.extend({
         var self = this;
 
         // keep tags for 'saved' event
-        myTags = this.get('tags');
+        this.myTags = this.get('tags');
 
         ghostBookshelf.Model.prototype.saving.call(this);
 
@@ -92,9 +91,10 @@ Post = ghostBookshelf.Model.extend({
 
     updateTags: function (newPost, attr, options) {
         /*jslint unparam:true*/
+        var self = this;
         options = options || {};
 
-        if (!myTags) {
+        if (!this.myTags) {
             return;
         }
 
@@ -108,7 +108,7 @@ Post = ghostBookshelf.Model.extend({
 
             // First find any tags which have been removed
             _.each(existingTags, function (existingTag) {
-                if (!_.some(myTags, function (newTag) { return newTag.name === existingTag.name; })) {
+                if (!_.some(self.myTags, function (newTag) { return newTag.name === existingTag.name; })) {
                     tagsToDetach.push(existingTag.id);
                 }
             });
@@ -118,7 +118,7 @@ Post = ghostBookshelf.Model.extend({
             }
 
             // Next check if new tags are all exactly the same as what is set on the model
-            _.each(myTags, function (newTag) {
+            _.each(self.myTags, function (newTag) {
                 if (!_.some(existingTags, function (existingTag) { return newTag.name === existingTag.name; })) {
                     // newTag isn't on this post yet
                     tagsToAttach.push(newTag);