diff --git a/ledger/src/blockstore.rs b/ledger/src/blockstore.rs
index 9a5a8a54979c75..19a521e66935f7 100644
--- a/ledger/src/blockstore.rs
+++ b/ledger/src/blockstore.rs
@@ -444,8 +444,8 @@ impl Blockstore {
             block_height_cf,
             program_costs_cf,
             bank_hash_cf,
-            new_shreds_signals: Mutex::<Vec<Sender<bool>>>::default(),
-            completed_slots_senders: Mutex::<Vec<CompletedSlotsSender>>::default(),
+            new_shreds_signals: Mutex::default(),
+            completed_slots_senders: Mutex::default(),
             shred_timing_point_sender: None,
             insert_shreds_lock: Mutex::<()>::default(),
             last_root,