diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 0e68423..418c7f7 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -175,3 +175,9 @@
     (is (= (palabra-reservada? 'while) true))
   )
 )
+
+(deftest palabra-reservada-test02
+  (testing "Test 02 palabra reservada"
+    (is (= (palabra-reservada? 'until) false))
+  )
+)