diff --git a/README.md b/README.md
index 85f1e12..8624453 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ pgbench -t 1000 -p 5433 -h 127.0.0.1 --protocol extended
 ## Features
 
 1. Session mode.
-2. Transaction mode (basic).
+2. Transaction mode.
 3. `COPY` protocol support.
 4. Query cancellation.
 5. Round-robin load balancing of replicas.
diff --git a/src/messages.rs b/src/messages.rs
index 3f91487..9a74c7f 100644
--- a/src/messages.rs
+++ b/src/messages.rs
@@ -30,7 +30,7 @@ pub async fn server_parameters(stream: &mut TcpStream) -> Result<(), Error> {
 
     // Client encoding
     let len = client_encoding.len() as i32 + 4; // TODO: add more parameters here
-    let mut res = BytesMut::with_capacity(len as usize + 1);
+    let mut res = BytesMut::with_capacity(64);
 
     res.put_u8(b'S');
     res.put_i32(len);