diff --git a/relay/server/listener/ws/conn.go b/relay/server/listener/ws/conn.go
index c43546b96..c248963b9 100644
--- a/relay/server/listener/ws/conn.go
+++ b/relay/server/listener/ws/conn.go
@@ -74,15 +74,15 @@ func (c *Conn) RemoteAddr() net.Addr {
 }
 
 func (c *Conn) SetReadDeadline(t time.Time) error {
-	return fmt.Errorf("not implemented")
+	return fmt.Errorf("SetReadDeadline is not implemented")
 }
 
 func (c *Conn) SetWriteDeadline(t time.Time) error {
-	return fmt.Errorf("not implemented")
+	return fmt.Errorf("SetWriteDeadline is not implemented")
 }
 
 func (c *Conn) SetDeadline(t time.Time) error {
-	return fmt.Errorf("not implemented")
+	return fmt.Errorf("SetDeadline is not implemented")
 }
 
 func (c *Conn) Close() error {