diff --git a/crates/sui-cluster-test/src/test_case/coin_index_test.rs b/crates/sui-cluster-test/src/test_case/coin_index_test.rs
index a87caa627bd45..7aea7b733e28a 100644
--- a/crates/sui-cluster-test/src/test_case/coin_index_test.rs
+++ b/crates/sui-cluster-test/src/test_case/coin_index_test.rs
@@ -216,7 +216,7 @@ impl TestCaseImpl for CoinIndexTest {
             10000, // mint amount
         );
 
-        let balances = client.coin_read_api().get_all_balances(account).await?;
+        let mut balances = client.coin_read_api().get_all_balances(account).await?;
         let mut expected_balances = vec![
             Balance {
                 coin_type: sui_type_str.into(),
@@ -232,7 +232,8 @@ impl TestCaseImpl for CoinIndexTest {
             },
         ];
         // Comes with asc order.
-        expected_balances.sort_by(|l, r| l.coin_type.cmp(&r.coin_type));
+        expected_balances.sort_by(|l: &Balance, r| l.coin_type.cmp(&r.coin_type));
+        balances.sort_by(|l: &Balance, r| l.coin_type.cmp(&r.coin_type));
 
         assert_eq!(balances, expected_balances,);