diff --git a/src/avram/attribute.cr b/src/avram/attribute.cr
index 967b2ad57..83591e5f8 100644
--- a/src/avram/attribute.cr
+++ b/src/avram/attribute.cr
@@ -71,7 +71,7 @@ class Avram::Attribute(T)
     to = to.is_a?(Nothing) ? true : to == value
     value != original_value && from && to
   end
-end
 
-class Nothing
+  class Nothing
+  end
 end