diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 7096624..b73a1a3 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -73,3 +73,9 @@
     (is (= (compatibles? 'i64 5.0) false))
   )
 )
+
+(deftest compatibles-test03
+  (testing "Test 03 compatibles?"
+    (is (= (compatibles? 'i64 [5.0]) true))
+  )
+)