diff --git a/crates/rpc-types/src/eth/block.rs b/crates/rpc-types/src/eth/block.rs
index 56af04beca68..0a5e2ea170dc 100644
--- a/crates/rpc-types/src/eth/block.rs
+++ b/crates/rpc-types/src/eth/block.rs
@@ -1198,7 +1198,7 @@ mod tests {
                 difficulty: U256::from(13),
                 total_difficulty: Some(U256::from(100000)),
                 mix_hash: Some(B256::with_last_byte(14)),
-                nonce: Some(15),
+                nonce: Some(B64::with_last_byte(15)),
                 base_fee_per_gas: Some(20),
                 blob_gas_used: None,
                 excess_blob_gas: None,
@@ -1240,7 +1240,7 @@ mod tests {
                 difficulty: U256::from(13),
                 total_difficulty: Some(U256::from(100000)),
                 mix_hash: Some(B256::with_last_byte(14)),
-                nonce: Some(15),
+                nonce: Some(B64::with_last_byte(15)),
                 base_fee_per_gas: Some(20),
                 blob_gas_used: None,
                 excess_blob_gas: None,
@@ -1282,7 +1282,7 @@ mod tests {
                 difficulty: U256::from(13),
                 total_difficulty: Some(U256::from(100000)),
                 mix_hash: Some(B256::with_last_byte(14)),
-                nonce: Some(15),
+                nonce: Some(B64::with_last_byte(15)),
                 base_fee_per_gas: Some(20),
                 blob_gas_used: None,
                 excess_blob_gas: None,