diff --git a/rust/test/shared/accessors_test.rs b/rust/test/shared/accessors_test.rs
index ccd3d46..0fbb535 100644
--- a/rust/test/shared/accessors_test.rs
+++ b/rust/test/shared/accessors_test.rs
@@ -33,6 +33,8 @@
             default_bool(): eq(true),
         })
     );
+    assert_that!(msg.default_string(), eq("hello"));
+    assert_that!(msg.default_bytes(), eq("world".as_bytes()));
 }
 
 #[test]