diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 418c7f7..874fc56 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -181,3 +181,9 @@
     (is (= (palabra-reservada? 'until) false))
   )
 )
+
+(deftest palabra-reservada-test03
+  (testing "Test 03 palabra reservada"
+    (is (= (palabra-reservada? 13) false))
+  )
+)