--- a/reviewboard/reviewboard/static/rb/js/models/userSessionModel_mozreview.js
+++ b/reviewboard/reviewboard/static/rb/js/models/userSessionModel_mozreview.js
@@ -113,16 +113,17 @@ StoredItems = RB.BaseResource.extend({
  *
  * There should only ever be one instance of a UserSession. It should always
  * be created through UserSession.create, and retrieved through
  * UserSession.instance.
  */
 RB.UserSession = Backbone.Model.extend({
     defaults: {
         authenticated: false,
+        commitsTableAlwaysShowFull: false,
         diffsShowExtraWhitespace: false,
         diffsHideInlineComments: false,
         fullName: null,
         loginURL: null,
         username: null,
         userPageURL: null,
         sessionURL: null,
         timezoneOffset: '0',
@@ -153,16 +154,24 @@ RB.UserSession = Backbone.Model.extend({
 
         this.mutedReviewRequests = new StoredItems({
             url: this.get('mutedReviewRequestsURL'),
             removeError: gettext('Must log in to remove a muted item.'),
             addError: gettext('Must log in to add a muted item.')
         });
 
         this._bindCookie({
+            attr: 'commitsTableAlwaysShowFull',
+            cookieName: 'commits_table_show',
+            deserialize: function(value) {
+                return value !== 'false';
+            }
+        });
+
+        this._bindCookie({
             attr: 'diffsShowExtraWhitespace',
             cookieName: 'show_ew',
             deserialize: function(value) {
                 return value !== 'false';
             }
         });
 
         this._bindCookie({