diff --git a/programs/native/lua_loader/src/lib.rs b/programs/native/lua_loader/src/lib.rs
index 98e55974da..7b7850928d 100644
--- a/programs/native/lua_loader/src/lib.rs
+++ b/programs/native/lua_loader/src/lib.rs
@@ -166,7 +166,7 @@ mod tests {
                     userdata,
                     program_id,
                     executable: true,
-                    loader_program_id: Pubkey::default(),
+                    loader: Pubkey::default(),
                 },
             ),
             (alice_pubkey, Account::new(100, 0, program_id)),
@@ -204,7 +204,7 @@ mod tests {
             userdata,
             program_id,
             executable: true,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         };
         let alice_account = Account::new(100, 0, program_id);
         let serialize_account = Account {
@@ -212,7 +212,7 @@ mod tests {
             userdata: read_test_file("serialize.lua"),
             program_id,
             executable: false,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         };
         let mut accounts = [
             (Pubkey::default(), program_account),
@@ -246,7 +246,7 @@ mod tests {
             userdata: read_test_file("multisig.lua"),
             program_id,
             executable: true,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         };
 
         let alice_account = Account {
@@ -254,7 +254,7 @@ mod tests {
             userdata: Vec::new(),
             program_id,
             executable: true,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         };
 
         let serialize_account = Account {
@@ -262,7 +262,7 @@ mod tests {
             userdata: read_test_file("serialize.lua"),
             program_id,
             executable: true,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         };
 
         let mut accounts = [
diff --git a/sdk/src/account.rs b/sdk/src/account.rs
index 39354d650b..0db4829d10 100644
--- a/sdk/src/account.rs
+++ b/sdk/src/account.rs
@@ -16,7 +16,7 @@ pub struct Account {
     pub executable: bool,
 
     /// the loader for this program (Pubkey::default() for no loader)
-    pub loader_program_id: Pubkey,
+    pub loader: Pubkey,
 }
 
 impl Account {
@@ -27,7 +27,7 @@ impl Account {
             userdata: vec![0u8; space],
             program_id,
             executable: false,
-            loader_program_id: Pubkey::default(),
+            loader: Pubkey::default(),
         }
     }
 }
diff --git a/src/bank.rs b/src/bank.rs
index da0ac3d7ea..b628781a95 100644
--- a/src/bank.rs
+++ b/src/bank.rs
@@ -821,7 +821,7 @@ impl Bank {
                     Some(program) => program,
                     None => return Err(BankError::AccountNotFound),
                 };
-                if !program.executable || program.loader_program_id == Pubkey::default() {
+                if !program.executable || program.loader == Pubkey::default() {
                     return Err(BankError::AccountNotFound);
                 }
 
@@ -829,7 +829,7 @@ impl Bank {
                 keys.insert(0, program_id);
                 accounts.insert(0, program.clone());
 
-                program_id = program.loader_program_id;
+                program_id = program.loader;
             }
 
             let mut keyed_accounts: Vec<_> = (&keys)
@@ -2025,7 +2025,7 @@ mod tests {
         let string = transport_receiver.poll();
         assert!(string.is_ok());
         if let Async::Ready(Some(response)) = string.unwrap() {
-            let expected = format!(r#"{{"jsonrpc":"2.0","method":"accountNotification","params":{{"result":{{"executable":false,"loader_program_id":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"program_id":[129,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"tokens":1,"userdata":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]}},"subscription":0}}}}"#);
+            let expected = format!(r#"{{"jsonrpc":"2.0","method":"accountNotification","params":{{"result":{{"executable":false,"loader":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"program_id":[129,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"tokens":1,"userdata":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]}},"subscription":0}}}}"#);
             assert_eq!(expected, response);
         }
 
diff --git a/src/bpf_loader.rs b/src/bpf_loader.rs
index 24ebbecec2..c626111675 100644
--- a/src/bpf_loader.rs
+++ b/src/bpf_loader.rs
@@ -19,6 +19,6 @@ pub fn account() -> Account {
         program_id: id(),
         userdata: BPF_LOADER_NAME.as_bytes().to_vec(),
         executable: true,
-        loader_program_id: native_loader::id(),
+        loader: native_loader::id(),
     }
 }
diff --git a/src/rpc.rs b/src/rpc.rs
index 203da33587..f82a533cf0 100644
--- a/src/rpc.rs
+++ b/src/rpc.rs
@@ -488,7 +488,7 @@ mod tests {
                 "tokens": 20,
                 "userdata": [],
                 "executable": false,
-                "loader_program_id": [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+                "loader": [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
             },
             "id":1}
         "#;
diff --git a/src/rpc_pubsub.rs b/src/rpc_pubsub.rs
index dd9a148ddc..0322a1f233 100644
--- a/src/rpc_pubsub.rs
+++ b/src/rpc_pubsub.rs
@@ -401,7 +401,7 @@ mod tests {
         let contract_funds = Keypair::new();
         let contract_state = Keypair::new();
         let budget_program_id = BudgetState::id();
-        let loader_program_id = Pubkey::default(); // TODO
+        let loader = Pubkey::default(); // TODO
         let executable = false; // TODO
         let bank = Bank::new(&alice);
         let arc_bank = Arc::new(bank);
@@ -489,7 +489,7 @@ mod tests {
                    "tokens": 1,
                    "userdata": expected_userdata,
                    "executable": executable,
-                   "loader_program_id": loader_program_id,
+                   "loader": loader,
 
                },
                "subscription": 0,
@@ -530,7 +530,7 @@ mod tests {
                    "tokens": 51,
                    "userdata": expected_userdata,
                     "executable": executable,
-                   "loader_program_id": loader_program_id,
+                   "loader": loader,
                },
                "subscription": 0,
            }
@@ -569,7 +569,7 @@ mod tests {
                    "tokens": 1,
                    "userdata": expected_userdata,
                     "executable": executable,
-                   "loader_program_id": loader_program_id,
+                   "loader": loader,
                },
                "subscription": 0,
            }
diff --git a/src/system_program.rs b/src/system_program.rs
index 13c4410324..9fd0915142 100644
--- a/src/system_program.rs
+++ b/src/system_program.rs
@@ -94,7 +94,7 @@ impl SystemProgram {
                     accounts[1].program_id = program_id;
                     accounts[1].userdata = vec![0; space as usize];
                     accounts[1].executable = false;
-                    accounts[1].loader_program_id = Pubkey::default();
+                    accounts[1].loader = Pubkey::default();
                 }
                 SystemProgram::Assign { program_id } => {
                     if !Self::check_id(&accounts[0].program_id) {
@@ -112,11 +112,11 @@ impl SystemProgram {
                     accounts[1].tokens += tokens;
                 }
                 SystemProgram::Spawn => {
-                    if !accounts[0].executable || accounts[0].loader_program_id != Pubkey::default()
+                    if !accounts[0].executable || accounts[0].loader != Pubkey::default()
                     {
                         Err(Error::AccountNotFinalized)?;
                     }
-                    accounts[0].loader_program_id = accounts[0].program_id;
+                    accounts[0].loader = accounts[0].program_id;
                     accounts[0].program_id = tx.account_keys[0];
                 }
             }
diff --git a/src/token_program.rs b/src/token_program.rs
index 0b2de617f1..bb3ada7f52 100644
--- a/src/token_program.rs
+++ b/src/token_program.rs
@@ -19,6 +19,6 @@ pub fn account() -> Account {
         program_id: id(),
         userdata: ERC20_NAME.as_bytes().to_vec(),
         executable: true,
-        loader_program_id: native_loader::id(),
+        loader: native_loader::id(),
     }
 }