diff --git a/src/main.rs b/src/main.rs
index 2b2739d..fe41067 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -63,8 +63,7 @@
 
         if !self.check_auth(session.req_header()) {
             let result = if self.resist_407 {
-                self.respond_text(&mut session, 400, BAD_REQUEST_BODY, &[])
-                    .await
+                session.respond_error(405).await
             } else {
                 self.respond_text(
                     &mut session,
@@ -205,8 +204,7 @@
         let (host, port) = match self.parse_connect_target(session.req_header()) {
             Ok(v) => v,
             Err(_) => {
-                self.respond_text(session, 400, BAD_REQUEST_BODY, &[])
-                    .await?;
+                session.respond_error(400).await;
                 return Ok(true);
             }
         };