diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 3a002aa..661cafb 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -91,3 +91,9 @@
     (is (= (compatibles? 'String "Hola") true))
   )
 )
+
+(deftest compatibles-test06
+  (testing "Test 06 compatibles?"
+    (is (= (compatibles? 'bool true) true))
+  )
+)