diff --git a/banks-server/src/banks_server.rs b/banks-server/src/banks_server.rs
index 912e0813dc..e5192dde12 100644
--- a/banks-server/src/banks_server.rs
+++ b/banks-server/src/banks_server.rs
@@ -88,12 +88,7 @@ impl BanksServer {
         let block_commitment_cache = Arc::new(RwLock::new(BlockCommitmentCache::new(
             HashMap::default(),
             0,
-            CommitmentSlots {
-                slot,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
+            CommitmentSlots::new_from_slot(slot),
         )));
         Builder::new()
             .name("solana-bank-forks-client".to_string())
diff --git a/core/src/rpc.rs b/core/src/rpc.rs
index cf9f7411fb..75234c6c33 100644
--- a/core/src/rpc.rs
+++ b/core/src/rpc.rs
@@ -218,12 +218,7 @@ impl JsonRpcRequestProcessor {
             block_commitment_cache: Arc::new(RwLock::new(BlockCommitmentCache::new(
                 HashMap::new(),
                 0,
-                CommitmentSlots {
-                    slot: bank.slot(),
-                    root: 0,
-                    highest_confirmed_slot: 0,
-                    highest_confirmed_root: 0,
-                },
+                CommitmentSlots::new_from_slot(bank.slot()),
             ))),
             blockstore,
             validator_exit: create_validator_exit(&exit),
@@ -2547,12 +2542,7 @@ pub mod tests {
         let block_commitment_cache = Arc::new(RwLock::new(BlockCommitmentCache::new(
             block_commitment,
             10,
-            CommitmentSlots {
-                slot: bank.slot(),
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
+            CommitmentSlots::new_from_slot(bank.slot()),
         )));
 
         // Add timestamp vote to blockstore
@@ -4153,12 +4143,7 @@ pub mod tests {
         let block_commitment_cache = Arc::new(RwLock::new(BlockCommitmentCache::new(
             block_commitment,
             42,
-            CommitmentSlots {
-                slot: bank_forks.read().unwrap().highest_slot(),
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
+            CommitmentSlots::new_from_slot(bank_forks.read().unwrap().highest_slot()),
         )));
 
         let mut config = JsonRpcConfig::default();
@@ -4502,12 +4487,7 @@ pub mod tests {
         let mut new_block_commitment = BlockCommitmentCache::new(
             HashMap::new(),
             0,
-            CommitmentSlots {
-                root: 0,
-                slot: bank_forks.read().unwrap().highest_slot(),
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
+            CommitmentSlots::new_from_slot(bank_forks.read().unwrap().highest_slot()),
         );
         let mut w_block_commitment_cache = block_commitment_cache.write().unwrap();
         std::mem::swap(&mut *w_block_commitment_cache, &mut new_block_commitment);
@@ -4707,9 +4687,8 @@ pub mod tests {
             50,
             CommitmentSlots {
                 slot: bank.slot(),
-                root: 0,
-                highest_confirmed_slot: 0,
                 highest_confirmed_root,
+                ..CommitmentSlots::default()
             },
         );
 
diff --git a/core/src/rpc_subscriptions.rs b/core/src/rpc_subscriptions.rs
index 685a459cf2..207daf22ae 100644
--- a/core/src/rpc_subscriptions.rs
+++ b/core/src/rpc_subscriptions.rs
@@ -1228,9 +1228,7 @@ pub(crate) mod tests {
             10,
             CommitmentSlots {
                 slot: bank1.slot(),
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
+                ..CommitmentSlots::default()
             },
         );
 
diff --git a/runtime/src/commitment.rs b/runtime/src/commitment.rs
index a1b7648662..c6b41b6278 100644
--- a/runtime/src/commitment.rs
+++ b/runtime/src/commitment.rs
@@ -206,6 +206,15 @@ pub struct CommitmentSlots {
     pub highest_confirmed_root: Slot,
 }
 
+impl CommitmentSlots {
+    pub fn new_from_slot(slot: Slot) -> Self {
+        Self {
+            slot,
+            ..Self::default()
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -275,16 +284,9 @@ mod tests {
         block_commitment.entry(1).or_insert_with(|| cache0.clone()); // Slot 1, conf 2
         block_commitment.entry(2).or_insert_with(|| cache1.clone()); // Slot 2, conf 1
         block_commitment.entry(3).or_insert_with(|| cache2.clone()); // Slot 3, conf 0
-        let block_commitment_cache = BlockCommitmentCache::new(
-            block_commitment,
-            total_stake,
-            CommitmentSlots {
-                slot: bank_slot_5,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
-        );
+        let commitment_slots = CommitmentSlots::new_from_slot(bank_slot_5);
+        let block_commitment_cache =
+            BlockCommitmentCache::new(block_commitment, total_stake, commitment_slots);
 
         assert_eq!(block_commitment_cache.calculate_highest_confirmed_slot(), 2);
 
@@ -293,16 +295,8 @@ mod tests {
         block_commitment.entry(1).or_insert_with(|| cache1.clone()); // Slot 1, conf 1
         block_commitment.entry(2).or_insert_with(|| cache1.clone()); // Slot 2, conf 1
         block_commitment.entry(3).or_insert_with(|| cache2.clone()); // Slot 3, conf 0
-        let block_commitment_cache = BlockCommitmentCache::new(
-            block_commitment,
-            total_stake,
-            CommitmentSlots {
-                slot: bank_slot_5,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
-        );
+        let block_commitment_cache =
+            BlockCommitmentCache::new(block_commitment, total_stake, commitment_slots);
 
         assert_eq!(block_commitment_cache.calculate_highest_confirmed_slot(), 2);
 
@@ -311,16 +305,8 @@ mod tests {
         block_commitment.entry(1).or_insert_with(|| cache1.clone()); // Slot 1, conf 1
         block_commitment.entry(3).or_insert(cache1); // Slot 3, conf 1
         block_commitment.entry(5).or_insert_with(|| cache2.clone()); // Slot 5, conf 0
-        let block_commitment_cache = BlockCommitmentCache::new(
-            block_commitment,
-            total_stake,
-            CommitmentSlots {
-                slot: bank_slot_5,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
-        );
+        let block_commitment_cache =
+            BlockCommitmentCache::new(block_commitment, total_stake, commitment_slots);
 
         assert_eq!(block_commitment_cache.calculate_highest_confirmed_slot(), 3);
 
@@ -329,16 +315,8 @@ mod tests {
         block_commitment.entry(1).or_insert(cache0); // Slot 1, conf 2
         block_commitment.entry(2).or_insert_with(|| cache2.clone()); // Slot 2, conf 0
         block_commitment.entry(3).or_insert_with(|| cache2.clone()); // Slot 3, conf 0
-        let block_commitment_cache = BlockCommitmentCache::new(
-            block_commitment,
-            total_stake,
-            CommitmentSlots {
-                slot: bank_slot_5,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
-        );
+        let block_commitment_cache =
+            BlockCommitmentCache::new(block_commitment, total_stake, commitment_slots);
 
         assert_eq!(block_commitment_cache.calculate_highest_confirmed_slot(), 1);
 
@@ -347,16 +325,8 @@ mod tests {
         block_commitment.entry(1).or_insert_with(|| cache2.clone()); // Slot 1, conf 0
         block_commitment.entry(2).or_insert_with(|| cache2.clone()); // Slot 2, conf 0
         block_commitment.entry(3).or_insert(cache2); // Slot 3, conf 0
-        let block_commitment_cache = BlockCommitmentCache::new(
-            block_commitment,
-            total_stake,
-            CommitmentSlots {
-                slot: bank_slot_5,
-                root: 0,
-                highest_confirmed_slot: 0,
-                highest_confirmed_root: 0,
-            },
-        );
+        let block_commitment_cache =
+            BlockCommitmentCache::new(block_commitment, total_stake, commitment_slots);
 
         assert_eq!(block_commitment_cache.calculate_highest_confirmed_slot(), 0);
     }