diff --git a/src/kiss.c b/src/kiss.c
index 30adf45..bdf0e43 100644
--- a/src/kiss.c
+++ b/src/kiss.c
@@ -143,6 +143,10 @@ patty_kiss_tnc *patty_kiss_tnc_new_fd(int fd) {
         if (tcsetattr(fd, TCSANOW, &tnc->attrs) < 0) {
             goto error_tcsetattr;
         }
+
+        if (tcflush(fd, TCIOFLUSH) < 0) {
+            goto error_tcflush;
+        }
     }
 
     tnc->fd      =  fd;
@@ -154,6 +158,7 @@ patty_kiss_tnc *patty_kiss_tnc_new_fd(int fd) {
 
     return tnc;
 
+error_tcflush:
 error_tcsetattr:
 error_tcgetattr:
 error_malloc_buf: