diff --git a/src/test/php/lang/ast/unittest/parse/OperatorTest.class.php b/src/test/php/lang/ast/unittest/parse/OperatorTest.class.php
index 6040b96..e2b9f6a 100755
--- a/src/test/php/lang/ast/unittest/parse/OperatorTest.class.php
+++ b/src/test/php/lang/ast/unittest/parse/OperatorTest.class.php
@@ -18,7 +18,7 @@
   UnaryExpression,
   Variable
 };
-use lang\ast\types\{IsExpression, IsValue};
+use lang\ast\types\{IsExpression, IsGeneric, IsValue};
 use test\{Assert, Test, Values};
 
 class OperatorTest extends ParseTest {
@@ -283,6 +283,18 @@ public function precedence_of_not_and_instance_of() {
     );
   }
 
+  #[Test]
+  public function instanceof_generic() {
+    $this->assertParsed(
+      [new InstanceOfExpression(
+        new Variable('this', self::LINE),
+        new IsGeneric(new IsValue('self'), [new IsValue('T')]),
+        self::LINE
+      )],
+      '$this instanceof self<T>;'
+    );
+  }
+
   #[Test, Values(['+', '-', '~'])]
   public function precedence_of_prefix($operator) {
     $this->assertParsed(