diff --git a/transport/trojan/trojan.go b/transport/trojan/trojan.go
index 864413b6e..d6ee7285a 100644
--- a/transport/trojan/trojan.go
+++ b/transport/trojan/trojan.go
@@ -148,7 +148,7 @@ func (t *Trojan) PresetXTLSConn(conn net.Conn) (net.Conn, error) {
 				xtlsConn.DirectMode = true
 			}
 		} else {
-			return nil, fmt.Errorf("failed to use %s, maybe \"security\" is not \"xtls\"", t.option.Flow)
+			return conn, fmt.Errorf("failed to use %s, maybe \"security\" is not \"xtls\"", t.option.Flow)
 		}
 	}