diff --git a/app/models/my_module.rb b/app/models/my_module.rb
index ab656ad76..1b26464ad 100644
--- a/app/models/my_module.rb
+++ b/app/models/my_module.rb
@@ -57,7 +57,7 @@ class MyModule < ApplicationRecord
   has_many :repository_snapshots, dependent: :destroy, inverse_of: :my_module
   has_many :user_my_modules, inverse_of: :my_module, dependent: :destroy
   has_many :users, through: :user_assignments
-  has_many :designated_users, through: :user_my_modules
+  has_many :designated_users, through: :user_my_modules, source: :user
   has_many :report_elements, inverse_of: :my_module, dependent: :destroy
   has_many :protocols, inverse_of: :my_module, dependent: :destroy
   # Associations for old activity type