diff --git a/crates/uopool/src/memory/mempool.rs b/crates/uopool/src/memory/mempool.rs
index 130ceaf3..e8cc084b 100644
--- a/crates/uopool/src/memory/mempool.rs
+++ b/crates/uopool/src/memory/mempool.rs
@@ -45,7 +45,7 @@ impl Mempool for MemoryMempool {
 
         self.user_operations_by_sender
             .entry(uo.sender)
-            .or_insert_with(Default::default)
+            .or_default()
             .insert(uo_hash);
         self.user_operations.insert(uo_hash, uo);
 
diff --git a/crates/uopool/src/validate/simulation_trace/storage_access.rs b/crates/uopool/src/validate/simulation_trace/storage_access.rs
index 7b344e80..c5999474 100644
--- a/crates/uopool/src/validate/simulation_trace/storage_access.rs
+++ b/crates/uopool/src/validate/simulation_trace/storage_access.rs
@@ -47,10 +47,7 @@ impl StorageAccess {
 
                 if kecc.starts_with(&addr_b) {
                     let k = keccak256(kecc.clone());
-                    slots
-                        .entry(entity.address)
-                        .or_insert(HashSet::new())
-                        .insert(k.into());
+                    slots.entry(entity.address).or_default().insert(k.into());
                 }
             }
         }