diff --git a/app/views/access_permissions/partials/_member_field.html.erb b/app/views/access_permissions/partials/_member_field.html.erb
index 6b3bbf8a5..421ad7900 100644
--- a/app/views/access_permissions/partials/_member_field.html.erb
+++ b/app/views/access_permissions/partials/_member_field.html.erb
@@ -6,8 +6,9 @@
   item_id = dom_id(user, :assignment_member)
 %>
 
-<%= form_with(model: assignment, url: update_path, method: :put, html: { class: 'member-item', id: item_id, data: { remote: true, action: 'replace-form autosave-form', object_type: :assignment_member } }) do |f| %>
-  <%= f.hidden_field :user_id, value: f.object.user.id %>
+<% if assignment.present? %>
+  <%= form_with(model: assignment, url: update_path, method: :put, html: { class: 'member-item', id: item_id, data: { remote: true, action: 'replace-form autosave-form', object_type: :assignment_member } }) do |f| %>
+    <%= f.hidden_field :user_id, value: f.object.user.id %>
     <div class="user-assignment-info">
       <div class="global-avatar-container">
         <%= image_tag avatar_path(user, :icon_small), title: current_assignee_name(user), class: 'img-circle pull-left' %>
@@ -50,4 +51,5 @@
         </button>
       <% end %>
     </div>
+  <% end %>
 <% end %>