diff --git a/README.md b/README.md
index 68b1271..63eae75 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,13 @@ Rules->type(Type);
 
 Enforce a data type on the request by chaining the `type()` method and passing it one of the available enum [`Type`](#types)s as its argument.
 
+> [!TIP]
+> Allow multiple types (union) by chaining multiple `type()` methods
+> ```php
+> // Example
+> Rules->type(Type::NUMBER)->type(Type::NULL);
+> ```
+
 ### Types
 Type|Description
 --|--
diff --git a/src/Ruleset.php b/src/Ruleset.php
index cd7eaa9..57f1a1e 100644
--- a/src/Ruleset.php
+++ b/src/Ruleset.php
@@ -90,7 +90,7 @@
 					$this->add_error($name, "Value must be exactly: {$values}");
 				}
 
-				$this->add_error($name, "Value must be of type {$types}{$enum_values}");
+				$this->add_error($name, "Value must be of type {$types}");
 			}
 
 			if ($rules->min && !$rules->eval_min($value, $scope)) {