diff --git a/src/block.rs b/src/block.rs
index e38aa49..38a2f23 100644
--- a/src/block.rs
+++ b/src/block.rs
@@ -227,7 +227,7 @@ pub enum BlockVerificationError {
     BlockSignatureVerificationFailed { block_hash: BlockHash, error: CryptoError },
 }
 
-/// Verifies that the the block header was signed by the expected sequencer.
+/// Verifies that the block header was signed by the expected sequencer.
 pub fn verify_block_signature(
     sequencer_pub_key: &SequencerPublicKey,
     signature: &BlockSignature,
diff --git a/src/block_hash/block_hash_calculator.rs b/src/block_hash/block_hash_calculator.rs
index 72a4bdb..d6d2a5a 100644
--- a/src/block_hash/block_hash_calculator.rs
+++ b/src/block_hash/block_hash_calculator.rs
@@ -54,7 +54,7 @@ pub struct BlockHeaderCommitments {
 }
 
 /// Poseidon (
-///     “STARKNET_BLOCK_HASH0”, block_number, global_state_root, sequencer_address,
+///     "STARKNET_BLOCK_HASH0", block_number, global_state_root, sequencer_address,
 ///     block_timestamp, concat_counts, state_diff_hash, transaction_commitment,
 ///     event_commitment, receipt_commitment, gas_price_wei, gas_price_fri,
 ///     data_gas_price_wei, data_gas_price_fri, starknet_version, 0, parent_block_hash