README.md in metaractor-3.0.0 vs README.md in metaractor-3.0.1

@@ -232,10 +232,10 @@
 
 You can also use this feature to work with machine readable keys:
 ```ruby
 result = Users::UpdateUser.call
 if result.failure? &&
-  result.errors[:is_admin] == :true_or_false
+  result.errors[:is_admin].include?(:true_or_false)
 
   # handle this specific case
 end
 ```