diff --git a/app/controllers/context_modules_controller.rb b/app/controllers/context_modules_controller.rb
index 8934befa9bf..bbabeca0303 100644
--- a/app/controllers/context_modules_controller.rb
+++ b/app/controllers/context_modules_controller.rb
@@ -67,6 +67,7 @@ class ContextModulesController < ApplicationController
 
       module_file_details = load_module_file_details if @context.grants_right?(@current_user, session, :manage_content)
       js_env :course_id => @context.id,
+        :CONTEXT_URL_ROOT => polymorphic_path([@context]),
         :FILES_CONTEXTS => [{asset_string: @context.asset_string}],
         :MODULE_FILE_DETAILS => module_file_details,
         :MODULE_FILE_PERMISSIONS => {
diff --git a/app/views/jst/assignments/AssignmentListItem.handlebars b/app/views/jst/assignments/AssignmentListItem.handlebars
index f5df2a616a7..984fb69bf11 100644
--- a/app/views/jst/assignments/AssignmentListItem.handlebars
+++ b/app/views/jst/assignments/AssignmentListItem.handlebars
@@ -66,7 +66,7 @@
     {{#if canManage}}
       <div class="ig-admin">
         {{#if cyoe.isTrigger}}
-        <a href="assignments/{{id}}/edit/?return_to={{return_to}}#mastery-paths-editor" title="{{#t}}Edit Mastery Paths for {{name}}{{/t}}">{{#t}}Mastery Paths{{/t}}</a>
+        <a href="{{htmlEditUrl}}?return_to={{return_to}}#mastery-paths-editor" title="{{#t}}Edit Mastery Paths for {{name}}{{/t}}">{{#t}}Mastery Paths{{/t}}</a>
         {{/if}}
         {{#if cyoe.isReleased}}
         <span class="pill mastery-path-icon" data-tooltip title="{{#t}}Released by Mastery Path{{/t}}">
@@ -121,7 +121,7 @@
             {{#if cyoe.isCyoeAble}}
             <li>
               <a
-                href="assignments/{{id}}/edit/?return_to={{return_to}}#mastery-paths-editor"
+                href="{{htmlEditUrl}}?return_to={{return_to}}#mastery-paths-editor"
                 class="edit_mastery_paths icon-mastery-path"
                 id="assignment_{{id}}_settings_edit_item_mastery_paths"
                 aria-label="{{#t}}Edit Assignment {{name}} Mastery Paths{{/t}}"
diff --git a/public/javascripts/context_modules.js b/public/javascripts/context_modules.js
index 418bb5639ed..5ca00864f14 100644
--- a/public/javascripts/context_modules.js
+++ b/public/javascripts/context_modules.js
@@ -528,7 +528,8 @@ define([
 
         if (cyoe.isCyoeAble) {
           var $mpLink = $('<a class="mastery_paths_link" />')
-            .attr('href', './modules/items/' +
+            .attr('href', ENV.CONTEXT_URL_ROOT +
+                          '/modules/items/' +
                           data.id +
                           '/edit_mastery_paths?return_to=' +
                           encodeURIComponent(window.location.pathname))