diff --git a/crates/bft-json-crdt/tests/commutative.rs b/crates/bft-json-crdt/tests/commutative.rs
index abf64fd..ddda95c 100644
--- a/crates/bft-json-crdt/tests/commutative.rs
+++ b/crates/bft-json-crdt/tests/commutative.rs
@@ -6,7 +6,7 @@ use bft_json_crdt::{
 };
 use rand::{rngs::ThreadRng, seq::SliceRandom, Rng};
 
-fn random_op<T: CrdtNode>(arr: &Vec<Op<T>>, rng: &mut ThreadRng) -> OpId {
+fn random_op<T: CrdtNode>(arr: &[Op<T>], rng: &mut ThreadRng) -> OpId {
     arr.choose(rng).map(|op| op.id).unwrap_or(ROOT_ID)
 }