diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index 9d9e1cec31..ab7793319a 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -288,7 +288,7 @@ impl Bank {
         bank.update_clock();
         bank.update_rent();
         bank.update_epoch_schedule();
-        bank.update_recent_block_hashes();
+        bank.update_recent_blockhashes();
         bank
     }
 
@@ -382,7 +382,7 @@ impl Bank {
         new.update_stake_history(Some(parent.epoch()));
         new.update_clock();
         new.update_fees();
-        new.update_recent_block_hashes();
+        new.update_recent_blockhashes();
         new
     }
 
@@ -537,15 +537,15 @@ impl Bank {
         );
     }
 
-    fn update_recent_block_hashes(&self) {
-        let recent_block_hashes = self
+    fn update_recent_blockhashes(&self) {
+        let recent_blockhashes = self
             .blockhash_queue
             .read()
             .unwrap()
-            .get_recent_blockhashes(sysvar::recent_block_hashes::MAX_ENTRIES);
+            .get_recent_blockhashes(sysvar::recent_blockhashes::MAX_ENTRIES);
         self.store_account(
-            &sysvar::recent_block_hashes::id(),
-            &sysvar::recent_block_hashes::create_account(1, recent_block_hashes),
+            &sysvar::recent_blockhashes::id(),
+            &sysvar::recent_blockhashes::create_account(1, recent_blockhashes),
         );
     }
 
@@ -3357,22 +3357,22 @@ mod tests {
     }
 
     #[test]
-    fn test_recent_block_hashes_sysvar() {
+    fn test_recent_blockhashes_sysvar() {
         let (genesis_block, _mint_keypair) = create_genesis_block(500);
         let mut bank = Arc::new(Bank::new(&genesis_block));
         let bhq_account = bank
-            .get_account(&sysvar::recent_block_hashes::id())
+            .get_account(&sysvar::recent_blockhashes::id())
             .unwrap();
-        let recent_block_hashes =
-            sysvar::recent_block_hashes::RecentBlockHashes::from_account(&bhq_account).unwrap();
-        assert_eq!(recent_block_hashes.len(), 1);
+        let recent_blockhashes =
+            sysvar::recent_blockhashes::RecentBlockhashes::from_account(&bhq_account).unwrap();
+        assert_eq!(recent_blockhashes.len(), 1);
         goto_end_of_slot(Arc::get_mut(&mut bank).unwrap());
         let bank = Arc::new(new_from_parent(&bank));
         let bhq_account = bank
-            .get_account(&sysvar::recent_block_hashes::id())
+            .get_account(&sysvar::recent_blockhashes::id())
             .unwrap();
-        let recent_block_hashes =
-            sysvar::recent_block_hashes::RecentBlockHashes::from_account(&bhq_account).unwrap();
-        assert_eq!(recent_block_hashes.len(), 2);
+        let recent_blockhashes =
+            sysvar::recent_blockhashes::RecentBlockhashes::from_account(&bhq_account).unwrap();
+        assert_eq!(recent_blockhashes.len(), 2);
     }
 }
diff --git a/sdk/src/sysvar/mod.rs b/sdk/src/sysvar/mod.rs
index ab95c6da5b..231786d3d4 100644
--- a/sdk/src/sysvar/mod.rs
+++ b/sdk/src/sysvar/mod.rs
@@ -5,7 +5,7 @@ use crate::pubkey::Pubkey;
 pub mod clock;
 pub mod epoch_schedule;
 pub mod fees;
-pub mod recent_block_hashes;
+pub mod recent_blockhashes;
 pub mod rent;
 pub mod rewards;
 pub mod slot_hashes;
@@ -15,7 +15,7 @@ pub fn is_sysvar_id(id: &Pubkey) -> bool {
     clock::check_id(id)
         || epoch_schedule::check_id(id)
         || fees::check_id(id)
-        || recent_block_hashes::check_id(id)
+        || recent_blockhashes::check_id(id)
         || rent::check_id(id)
         || rewards::check_id(id)
         || slot_hashes::check_id(id)
diff --git a/sdk/src/sysvar/recent_block_hashes.rs b/sdk/src/sysvar/recent_block_hashes.rs
index d8288cacde..1a8742592d 100644
--- a/sdk/src/sysvar/recent_block_hashes.rs
+++ b/sdk/src/sysvar/recent_block_hashes.rs
@@ -12,15 +12,15 @@ crate::solana_sysvar_id!(ID, "SysvarRecentB1ockHashes11111111111111111111");
 
 #[repr(C)]
 #[derive(Serialize, Deserialize, Debug, PartialEq)]
-pub struct RecentBlockHashes(Vec<Hash>);
+pub struct RecentBlockhashes(Vec<Hash>);
 
-impl Default for RecentBlockHashes {
+impl Default for RecentBlockhashes {
     fn default() -> Self {
         Self(Vec::with_capacity(MAX_ENTRIES))
     }
 }
 
-impl RecentBlockHashes {
+impl RecentBlockhashes {
     pub fn from_account(account: &Account) -> Option<Self> {
         account.deserialize_data().ok()
     }
@@ -35,21 +35,21 @@ impl RecentBlockHashes {
         account.serialize_data(self).ok()
     }
     pub fn size_of() -> usize {
-        serialized_size(&RecentBlockHashes(vec![Hash::default(); MAX_ENTRIES])).unwrap() as usize
+        serialized_size(&RecentBlockhashes(vec![Hash::default(); MAX_ENTRIES])).unwrap() as usize
     }
 }
 
-impl Deref for RecentBlockHashes {
+impl Deref for RecentBlockhashes {
     type Target = Vec<Hash>;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 
-pub fn create_account(lamports: u64, recent_block_hashes: Vec<Hash>) -> Account {
-    let mut account = Account::new(lamports, RecentBlockHashes::size_of(), &sysvar::id());
-    let recent_block_hashes = RecentBlockHashes(recent_block_hashes);
-    recent_block_hashes.to_account(&mut account).unwrap();
+pub fn create_account(lamports: u64, recent_blockhashes: Vec<Hash>) -> Account {
+    let mut account = Account::new(lamports, RecentBlockhashes::size_of(), &sysvar::id());
+    let recent_blockhashes = RecentBlockhashes(recent_blockhashes);
+    recent_blockhashes.to_account(&mut account).unwrap();
     account
 }
 
@@ -61,21 +61,21 @@ mod tests {
     #[test]
     fn test_create_account_empty() {
         let account = create_account(42, vec![]);
-        let recent_block_hashes = RecentBlockHashes::from_account(&account).unwrap();
-        assert_eq!(recent_block_hashes, RecentBlockHashes::default());
+        let recent_blockhashes = RecentBlockhashes::from_account(&account).unwrap();
+        assert_eq!(recent_blockhashes, RecentBlockhashes::default());
     }
 
     #[test]
     fn test_create_account_full() {
         let account = create_account(42, vec![Hash::default(); MAX_ENTRIES]);
-        let recent_block_hashes = RecentBlockHashes::from_account(&account).unwrap();
-        assert_eq!(recent_block_hashes.len(), MAX_ENTRIES);
+        let recent_blockhashes = RecentBlockhashes::from_account(&account).unwrap();
+        assert_eq!(recent_blockhashes.len(), MAX_ENTRIES);
     }
 
     #[test]
     #[should_panic]
     fn test_create_account_too_big() {
         let account = create_account(42, vec![Hash::default(); MAX_ENTRIES + 1]);
-        RecentBlockHashes::from_account(&account).unwrap();
+        RecentBlockhashes::from_account(&account).unwrap();
     }
 }