diff --git a/app/models/code_ocean/file.rb b/app/models/code_ocean/file.rb
index 35e42070..9c452200 100644
--- a/app/models/code_ocean/file.rb
+++ b/app/models/code_ocean/file.rb
@@ -19,7 +19,7 @@ module CodeOcean
     include DefaultValues
 
     DEFAULT_WEIGHT = 1.0
-    ROLES = %w[main_file reference_implementation regular_file executable_file teacher_defined_test user_defined_file user_defined_test teacher_defined_linter].freeze
+    ROLES = %w[regular_file main_file reference_implementation executable_file teacher_defined_test user_defined_file user_defined_test teacher_defined_linter].freeze
     TEACHER_DEFINED_ROLES = ROLES - %w[user_defined_file]
 
     after_initialize :set_default_values
diff --git a/app/views/exercises/_file_form.html.slim b/app/views/exercises/_file_form.html.slim
index 5d400dce..06bc75b2 100644
--- a/app/views/exercises/_file_form.html.slim
+++ b/app/views/exercises/_file_form.html.slim
@@ -28,7 +28,7 @@ li.card.mt-2
         = f.collection_select(:file_type_id, @file_types, :id, :name, {}, class: 'form-control')
       .form-group
         = f.label(:role, t('activerecord.attributes.file.role'))
-        = f.select(:role, CodeOcean::File::TEACHER_DEFINED_ROLES.map { |role| [t("files.roles.#{role}"), role] }, {include_blank: true}, class: 'form-control')
+        = f.select(:role, CodeOcean::File::TEACHER_DEFINED_ROLES.map { |role| [t("files.roles.#{role}"), role] }, {}, class: 'form-control')
       .form-check
         label.form-check-label
           = f.check_box(:hidden, class: 'form-check-input')