diff --git a/node/actors/network/src/lib.rs b/node/actors/network/src/lib.rs
index b56feeea..f99d1ad6 100644
--- a/node/actors/network/src/lib.rs
+++ b/node/actors/network/src/lib.rs
@@ -25,6 +25,7 @@ mod watch;
 
 pub use config::*;
 
+/// Limit for the rate of accepting new TCP connections.
 const MAX_CONNECTION_ACCEPT_RATE: limiter::Rate = limiter::Rate {
     burst: 10,
     refresh: time::Duration::milliseconds(100),
diff --git a/node/actors/network/src/mux/mod.rs b/node/actors/network/src/mux/mod.rs
index 2c7fb5f5..b8b4d0c3 100644
--- a/node/actors/network/src/mux/mod.rs
+++ b/node/actors/network/src/mux/mod.rs
@@ -81,7 +81,6 @@ use crate::{frame, noise::bytes};
 use anyhow::Context as _;
 use std::{collections::BTreeMap, sync::Arc};
 use zksync_concurrency::{ctx, ctx::channel, io, scope, sync};
-use zksync_protobuf::ProtoFmt as _;
 
 mod config;
 mod handshake;