diff --git a/src/PhpGenerator/Type.php b/src/PhpGenerator/Type.php
index f7568550..2bfef1e0 100644
--- a/src/PhpGenerator/Type.php
+++ b/src/PhpGenerator/Type.php
@@ -16,22 +16,41 @@
 class Type
 {
 	public const
-		STRING = 'string',
-		INT = 'int',
-		FLOAT = 'float',
-		BOOL = 'bool',
-		ARRAY = 'array',
-		OBJECT = 'object',
-		CALLABLE = 'callable',
-		ITERABLE = 'iterable',
-		VOID = 'void',
-		NEVER = 'never',
-		MIXED = 'mixed',
-		FALSE = 'false',
-		NULL = 'null',
-		SELF = 'self',
-		PARENT = 'parent',
-		STATIC = 'static';
+		String = 'string',
+		Int = 'int',
+		Float = 'float',
+		Bool = 'bool',
+		Array = 'array',
+		Object = 'object',
+		Callable = 'callable',
+		Iterable = 'iterable',
+		Void = 'void',
+		Never = 'never',
+		Mixed = 'mixed',
+		False = 'false',
+		Null = 'null',
+		Self = 'self',
+		Parent = 'parent',
+		Static = 'static';
+
+	/** @deprecated */
+	public const
+		STRING = self::String,
+		INT = self::Int,
+		FLOAT = self::Float,
+		BOOL = self::Bool,
+		ARRAY = self::Array,
+		OBJECT = self::Object,
+		CALLABLE = self::Callable,
+		ITERABLE = self::Iterable,
+		VOID = self::Void,
+		NEVER = self::Never,
+		MIXED = self::Mixed,
+		FALSE = self::False,
+		NULL = self::Null,
+		SELF = self::Self,
+		PARENT = self::Parent,
+		STATIC = self::Static;
 
 
 	public static function nullable(string $type, bool $state = true): string
diff --git a/tests/PhpGenerator/ClassType.phpt b/tests/PhpGenerator/ClassType.phpt
index b29ac616..cf2fcbb5 100644
--- a/tests/PhpGenerator/ClassType.phpt
+++ b/tests/PhpGenerator/ClassType.phpt
@@ -58,16 +58,16 @@ $class->addProperty('order')
 	->setValue(new Literal('RecursiveIteratorIterator::SELF_FIRST'));
 
 $class->addProperty('typed1')
-	->setType(Type::ARRAY)
+	->setType(Type::Array)
 	->setReadOnly();
 
 $class->addProperty('typed2')
-	->setType(Type::ARRAY)
+	->setType(Type::Array)
 	->setNullable()
 	->setInitialized();
 
 $class->addProperty('typed3')
-	->setType(Type::ARRAY)
+	->setType(Type::Array)
 	->setValue(null);
 
 $p = $class->addProperty('sections', ['first' => true])
@@ -126,7 +126,7 @@ $method->addParameter('item');
 
 $method->addParameter('res', null)
 		->setReference(true)
-		->setType(Type::union(Type::ARRAY, 'null'));
+		->setType(Type::union(Type::Array, 'null'));
 
 $method->addParameter('bar', null)
 		->setType('stdClass|string')
diff --git a/tests/PhpGenerator/Method.scalarParameters.phpt b/tests/PhpGenerator/Method.scalarParameters.phpt
index fac07279..3a1d5965 100644
--- a/tests/PhpGenerator/Method.scalarParameters.phpt
+++ b/tests/PhpGenerator/Method.scalarParameters.phpt
@@ -39,8 +39,8 @@ Assert::same('float', $method->getParameters()['d']->getType());
 
 $method = (new Method('create'))
 	->setBody('return null;');
-$method->addParameter('a')->setType(Type::STRING);
-$method->addParameter('b')->setType(Type::BOOL);
+$method->addParameter('a')->setType(Type::String);
+$method->addParameter('b')->setType(Type::Bool);
 
 same(
 	'function create(string $a, bool $b)
diff --git a/tests/PhpGenerator/Type.phpt b/tests/PhpGenerator/Type.phpt
index d487f18b..e49f2c82 100644
--- a/tests/PhpGenerator/Type.phpt
+++ b/tests/PhpGenerator/Type.phpt
@@ -8,7 +8,7 @@ use Tester\Assert;
 require __DIR__ . '/../bootstrap.php';
 
 
-Assert::same('A|string', Type::union(A::class, Type::STRING));
+Assert::same('A|string', Type::union(A::class, Type::String));
 
 Assert::same('?A', Type::nullable(A::class));
 Assert::same('?A', Type::nullable(A::class, true));