diff --git a/src/client.rs b/src/client.rs
index d4ec3b90..e75cd350 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1154,7 +1154,7 @@ where
     let builder = Builder::new();
     builder
         .handshake(io)
-        .instrument(tracing::trace_span!("client_handshake", io = %std::any::type_name::<T>()))
+        .instrument(tracing::trace_span!("client_handshake"))
         .await
 }
 
diff --git a/src/server.rs b/src/server.rs
index f82b0501..16a50da4 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -367,7 +367,7 @@ where
     B: Buf + 'static,
 {
     fn handshake2(io: T, builder: Builder) -> Handshake<T, B> {
-        let span = tracing::trace_span!("server_handshake", io = %std::any::type_name::<T>());
+        let span = tracing::trace_span!("server_handshake");
         let entered = span.enter();
 
         // Create the codec.