diff --git a/app/helpers/rails_admin/form_builder.rb b/app/helpers/rails_admin/form_builder.rb
index 832dd4eddc..0e39a5bc63 100644
--- a/app/helpers/rails_admin/form_builder.rb
+++ b/app/helpers/rails_admin/form_builder.rb
@@ -131,7 +131,7 @@ def without_field_error_proc_added_div
 
     def nested_field_association?(field, nested_in)
       field.inverse_of.presence && nested_in.presence && field.inverse_of == nested_in.name &&
-        (@template.instance_variable_get(:@model_config).abstract_model == field.associated_model_config.abstract_model ||
+        (@template.instance_variable_get(:@model_config).abstract_model == field.abstract_model ||
          field.name == nested_in.inverse_of)
     end
   end