diff --git a/tests/test.rs b/tests/test.rs
index 83f1620be..e548b7dae 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -1654,17 +1654,6 @@ fn test_deserialize_from_stream() {
     assert_eq!(request, response);
 }
 
-#[test]
-fn test_serialize_rejects_bool_keys() {
-    let map = treemap!(
-        true => 2,
-        false => 4,
-    );
-
-    let err = to_vec(&map).unwrap_err();
-    assert_eq!(err.to_string(), "key must be a string");
-}
-
 #[test]
 fn test_serialize_rejects_adt_keys() {
     let map = treemap!(