diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c
index d83e60e787b39b9b0dcc49838aa37165e0546c6f..96375f2ab886c87500d856027a791fa15c0d002d 100644
--- a/chardev/char-stdio.c
+++ b/chardev/char-stdio.c
@@ -59,7 +59,7 @@ static void qemu_chr_set_echo_stdio(Chardev *chr, bool echo)
     if (!echo) {
         tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
                          | INLCR | IGNCR | ICRNL | IXON);
-        tty.c_oflag &= ~OPOST;
+        tty.c_oflag |= OPOST;
         tty.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
         tty.c_cflag &= ~(CSIZE | PARENB);
         tty.c_cflag |= CS8;