diff --git a/bucket_map/src/bucket.rs b/bucket_map/src/bucket.rs
index 2d3d29abc..e4ec015c1 100644
--- a/bucket_map/src/bucket.rs
+++ b/bucket_map/src/bucket.rs
@@ -96,7 +96,7 @@ impl<'b, T: Clone + Copy + 'b> Bucket<T> {
             drives,
             index,
             data: vec![],
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
             stats,
             reallocated: Reallocated::default(),
         }
diff --git a/core/src/cluster_nodes.rs b/core/src/cluster_nodes.rs
index 3d2dea96c..47f948be5 100644
--- a/core/src/cluster_nodes.rs
+++ b/core/src/cluster_nodes.rs
@@ -305,7 +305,7 @@ pub fn new_cluster_nodes<T: 'static>(
         nodes,
         index,
         weighted_shuffle,
-        _phantom: PhantomData::default(),
+        _phantom: PhantomData,
     }
 }
 
diff --git a/ledger/src/blockstore_db.rs b/ledger/src/blockstore_db.rs
index 357211e4a..49f112965 100644
--- a/ledger/src/blockstore_db.rs
+++ b/ledger/src/blockstore_db.rs
@@ -1653,7 +1653,7 @@ impl<C: Column + ColumnName> CompactionFilterFactory for PurgedSlotFilterFactory
                 copied_oldest_slot
             ))
             .unwrap(),
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         }
     }
 
@@ -1696,7 +1696,7 @@ fn get_cf_options<C: 'static + Column + ColumnName>(
         cf_options.set_compaction_filter_factory(PurgedSlotFilterFactory::<C> {
             oldest_slot: oldest_slot.clone(),
             name: CString::new(format!("purged_slot_filter_factory({})", C::NAME)).unwrap(),
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         });
     }
 
@@ -1878,7 +1878,7 @@ pub mod tests {
         let mut factory = PurgedSlotFilterFactory::<ShredData> {
             oldest_slot: oldest_slot.clone(),
             name: CString::new("test compaction filter").unwrap(),
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         };
         let mut compaction_filter = factory.create(dummy_compaction_filter_context());
 
diff --git a/runtime/src/bucket_map_holder.rs b/runtime/src/bucket_map_holder.rs
index 976180fa5..bca6cf9b6 100644
--- a/runtime/src/bucket_map_holder.rs
+++ b/runtime/src/bucket_map_holder.rs
@@ -258,7 +258,7 @@ impl<T: IndexValue, U: IndexValue + From<T> + Into<T>> BucketMapHolder<T, U> {
             startup: AtomicBool::default(),
             mem_budget_mb,
             threads,
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         }
     }
 
diff --git a/runtime/src/stake_account.rs b/runtime/src/stake_account.rs
index d55b1ab36..e52e67e3b 100644
--- a/runtime/src/stake_account.rs
+++ b/runtime/src/stake_account.rs
@@ -69,7 +69,7 @@ impl TryFrom<AccountSharedData> for StakeAccount<()> {
         Ok(Self {
             account,
             stake_state,
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         })
     }
 }
@@ -86,7 +86,7 @@ impl TryFrom<AccountSharedData> for StakeAccount<Delegation> {
         Ok(Self {
             account: stake_account.account,
             stake_state: stake_account.stake_state,
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         })
     }
 }
@@ -97,7 +97,7 @@ impl From<StakeAccount<Delegation>> for StakeAccount<()> {
         Self {
             account: stake_account.account,
             stake_state: stake_account.stake_state,
-            _phantom: PhantomData::default(),
+            _phantom: PhantomData,
         }
     }
 }