diff --git a/app/models/mixins/supports_feature_mixin.rb b/app/models/mixins/supports_feature_mixin.rb
index 6957bf3d7c4..63c86f51feb 100644
--- a/app/models/mixins/supports_feature_mixin.rb
+++ b/app/models/mixins/supports_feature_mixin.rb
@@ -47,8 +47,6 @@
 module SupportsFeatureMixin
   extend ActiveSupport::Concern
 
-  COMMON_FEATURES = %i[create delete destroy refresh_ems update].freeze
-
   # Whenever this mixin is included we define all features as unsupported by default.
   # This way we can query for every feature
   included do
@@ -58,7 +56,7 @@ module SupportsFeatureMixin
   end
 
   def self.reason_or_default(reason = nil)
-    reason.present? ? reason : _("Feature not available/supported")
+    reason.presence || _("Feature not available/supported")
   end
 
   # query instance for the reason why the feature is unsupported