diff --git a/lettre/src/smtp/client/net.rs b/lettre/src/smtp/client/net.rs
index 000ec5d..18fa84c 100644
--- a/lettre/src/smtp/client/net.rs
+++ b/lettre/src/smtp/client/net.rs
@@ -12,7 +12,7 @@ use std::time::Duration;
 pub struct ClientTlsParameters {
     /// A connector from `native-tls`
     pub connector: TlsConnector,
-    /// The domain to send during the TLS handshake
+    /// The domain name which is expected in the TLS certificate from the server
     pub domain: String,
 }