diff --git a/app/controllers/admin/authorizations_controller.rb b/app/controllers/admin/authorizations_controller.rb
index 0eb56d2..762022a 100644
--- a/app/controllers/admin/authorizations_controller.rb
+++ b/app/controllers/admin/authorizations_controller.rb
@@ -57,13 +57,13 @@ class Admin::AuthorizationsController < OrbitAdminController
       @object_id = @object.id if @object
       @sub_mangers = Authorization.category_sub_managers(@object)
       @sorted_users = roles.inject({}) do |users, role|
-        users_for_role = role.member_profiles.select {|m| !m.user.is_admin?}.map {|u| u.user}
+        users_for_role = role.member_profiles.select {|m| !m.user.is_admin? if m.user}.map {|u| u.user}
         users[role] = users_for_role - @sub_mangers
         users
       end
     else
       @sorted_users = roles.inject({}) do |users, role|
-        users_for_role =  role.member_profiles.select {|m| !m.user.is_admin?}.map {|u| u.user}
+        users_for_role =  role.member_profiles.select {|m| !m.user.is_admin? if m.user}.map {|u| u.user}
         users[role] = users_for_role - @module_app.module_managers
         users
       end