diff --git a/app/models/education/program.rb b/app/models/education/program.rb
index 76f86dface99c1a7414f5c73f38a0c325eb85ae2..db6903e83a68899bfa99acd8e5ada3d3074ffabb 100644
--- a/app/models/education/program.rb
+++ b/app/models/education/program.rb
@@ -151,11 +151,6 @@ class Education::Program < ApplicationRecord
   end
 
   def references
-    []
-  end
-
-  def references
-    siblings +
     descendants
   end
 
diff --git a/app/views/admin/communication/blocks/templates/programs/_preview.html.erb b/app/views/admin/communication/blocks/templates/programs/_preview.html.erb
index 6abdb0c738143387ec6cb657c7c6b9aa22c9145f..01749cfdc8642a2b70a46619e8618d9fc8df1de9 100644
--- a/app/views/admin/communication/blocks/templates/programs/_preview.html.erb
+++ b/app/views/admin/communication/blocks/templates/programs/_preview.html.erb
@@ -21,7 +21,7 @@ end
           next if program.nil?
         %>
           <li>
-            <%= link_to program, [:admin, program] %>  
+            <%= link_to program, [:admin, program] %>
           </li>
         <% end %>
       </ol>