diff --git a/app/assets/javascripts/projects/canvas.js.erb b/app/assets/javascripts/projects/canvas.js.erb
index 8df86898d..d4f524071 100644
--- a/app/assets/javascripts/projects/canvas.js.erb
+++ b/app/assets/javascripts/projects/canvas.js.erb
@@ -886,7 +886,7 @@ function bindEditTagsAjax(elements) {
         $.each(data.my_modules, function(index, my_module){
           $('div.panel[data-module-id=' + my_module.id + ']')
             .find(".edit-tags-link")
-            .html(my_module.tags);
+            .html(my_module.tags_html);
         });
         // initialize tooltips again
         $.initTooltips();
diff --git a/app/controllers/my_module_tags_controller.rb b/app/controllers/my_module_tags_controller.rb
index 9a5eb5d31..b40673108 100644
--- a/app/controllers/my_module_tags_controller.rb
+++ b/app/controllers/my_module_tags_controller.rb
@@ -41,7 +41,7 @@ class MyModuleTagsController < ApplicationController
     experiment.active_my_modules.each do |my_module|
       res << {
         id: my_module.id,
-        tags: render_to_string(
+        tags_html: render_to_string(
           partial: 'canvas/tags.html.erb',
           locals: { my_module: my_module }
         )
diff --git a/app/views/experiments/canvas.html.erb b/app/views/experiments/canvas.html.erb
index 54cf13687..2769de66f 100644
--- a/app/views/experiments/canvas.html.erb
+++ b/app/views/experiments/canvas.html.erb
@@ -45,7 +45,7 @@
     </div>
   </div>
 
-  <div id="canvas-container" data-project-id="<%= @project.id %>" data-module-tags-url="<%= my_module_tags_experiment_path(@experiment) %>">
+  <div id="canvas-container" data-project-id="<%= @project.id %>" data-module-tags-url="<%= my_module_tags_experiment_path(@experiment, format: :json) %>">
     <%= render partial: 'canvas/full_zoom', locals: { experiment: @experiment, my_modules: @active_modules } %>
   </div>
 </div>