diff --git a/examples/pty_test/pty_test.c b/examples/pty_test/pty_test.c
index 692482f71..9469f78d0 100644
--- a/examples/pty_test/pty_test.c
+++ b/examples/pty_test/pty_test.c
@@ -324,6 +324,7 @@ int pty_test_main(int argc, char *argv[])
       goto error_serial;
     }
 
+#ifdef CONFIG_SERIAL_TERMIOS
   /* Enable \n -> \r\n conversion during write */
 
   ret = tcgetattr(termpair.fd_uart, &tio);
@@ -340,6 +341,7 @@ int pty_test_main(int argc, char *argv[])
       fprintf(stderr, "ERROR: tcsetattr() failed: %d\n", errno);
       goto error_serial;
     }
+#endif
 
   printf("Starting a new NSH Session using %s\n", buffer);