diff --git a/src/tty.c b/src/tty.c
index d5a6bd8..b337ba8 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -693,6 +693,7 @@ int tty_connect(void)
                     status = write(fd, &output_char, 1);
                     if (status < 0)
                         warning_printf("Could not write to tty device");
+                    fsync(fd);
 
                     /* Update transmit statistics */
                     tx_total++;