diff --git a/test/rustint/core_test.clj b/test/rustint/core_test.clj
index 50dca62..aa14cba 100644
--- a/test/rustint/core_test.clj
+++ b/test/rustint/core_test.clj
@@ -103,3 +103,9 @@
     (is (= (compatibles? 'bool 1) false))
   )
 )
+
+(deftest compatibles-test08
+  (testing "Test 08 compatibles?"
+    (is (= (compatibles? 'usize 1) true))
+  )
+)