diff --git a/book/src/introduction.md b/book/src/introduction.md
index 3cab2d481..33f5e34d4 100644
--- a/book/src/introduction.md
+++ b/book/src/introduction.md
@@ -34,4 +34,4 @@ A cluster is a set of computers that work together and can be viewed from the ou
 
 ## What are SOLs?
 
-A SOL is the name of Solana's native token, which can be passed to nodes in a Solana cluster in exchange for running an on-chain program or validating its output. The system may perform micropayments of fractional SOLs and a SOL may be split as many as 34 times. The fractional sol is called a _lamport_. It is named in honor of Solana's biggest technical influence, [Leslie Lamport](https://en.wikipedia.org/wiki/Leslie_Lamport). A lamport has a value of 0.000000001 sol.
+A SOL is the name of Solana's native token, which can be passed to nodes in a Solana cluster in exchange for running an on-chain program or validating its output. The system may perform micropayments of fractional SOLs, which are called _lamports_. They are named in honor of Solana's biggest technical influence, [Leslie Lamport](https://en.wikipedia.org/wiki/Leslie_Lamport). A lamport has a value of 0.000000001 SOL.
diff --git a/programs/vote_api/src/vote_instruction.rs b/programs/vote_api/src/vote_instruction.rs
index 4d9167c2f..32f520e2f 100644
--- a/programs/vote_api/src/vote_instruction.rs
+++ b/programs/vote_api/src/vote_instruction.rs
@@ -306,7 +306,7 @@ mod tests {
         let rent_calculator = solana_sdk::rent_calculator::RentCalculator::default();
         let minimum_balance = rent_calculator.minimum_balance(VoteState::size_of());
         // vote state cheaper than "my $0.02" ;)
-        assert!(minimum_balance as f64 / 2f64.powf(34.0) < 0.02)
+        assert!(minimum_balance as f64 / 10f64.powf(9.0) < 0.02)
     }
 
     #[test]
diff --git a/sdk/src/native_token.rs b/sdk/src/native_token.rs
index bfc1ca681..789f521d8 100644
--- a/sdk/src/native_token.rs
+++ b/sdk/src/native_token.rs
@@ -1,12 +1,12 @@
-/// There are 2^34 lamports in one sol
+/// There are 10^9 lamports in one SOL
 pub const SOL_LAMPORTS: u64 = 1_000_000_000;
 
-/// Approximately convert fractional native tokens (lamports) into native tokens (sol)
+/// Approximately convert fractional native tokens (lamports) into native tokens (SOL)
 pub fn lamports_to_sol(lamports: u64) -> f64 {
     lamports as f64 / SOL_LAMPORTS as f64
 }
 
-/// Approximately convert native tokens (sol) into fractional native tokens (lamports)
+/// Approximately convert native tokens (SOL) into fractional native tokens (lamports)
 pub fn sol_to_lamports(sol: f64) -> u64 {
     (sol * SOL_LAMPORTS as f64) as u64
 }
diff --git a/sdk/src/rent_calculator.rs b/sdk/src/rent_calculator.rs
index 6f1842121..1a7994baa 100644
--- a/sdk/src/rent_calculator.rs
+++ b/sdk/src/rent_calculator.rs
@@ -13,11 +13,11 @@ pub struct RentCalculator {
 }
 
 /// default rental rate in lamports/byte-year, based on:
-///  2^^34 lamports per Sol
-///  $1 per Sol
+///  10^9 lamports per SOL
+///  $1 per SOL
 ///  $0.01 per megabyte day
 ///  $3.65 per megabyte year
-pub const DEFAULT_LAMPORTS_PER_BYTE_YEAR: u64 = 0; //17_179_869_184 / 100 * 365 / (1024 * 1024);
+pub const DEFAULT_LAMPORTS_PER_BYTE_YEAR: u64 = 0; //1_000_000_000 / 100 * 365 / (1024 * 1024);
 
 /// default amount of time (in years) the balance has to include rent for
 pub const DEFAULT_EXEMPTION_THRESHOLD: f64 = 2.0;