diff --git a/rtl/linux/termios.inc b/rtl/linux/termios.inc
index c8cd33ef10..9a66c132ac 100644
--- a/rtl/linux/termios.inc
+++ b/rtl/linux/termios.inc
@@ -394,6 +394,7 @@ Const
    IXANY   = $0000800;
    IXOFF   = $0001000;
    IMAXBEL = $0002000;
+   IUTF8   = $0004000;
 
 {c_oflag bits}
    OPOST  = $0000001;
@@ -464,6 +465,18 @@ Const
    B115200 = $0001002;
    B230400 = $0001003;
    B460800 = $0001004;
+   B500000 = $0001005;
+   B576000 = $0001006;
+   B921600 = $0001007;
+   B1000000= $0001008;
+   B1152000= $0001009;
+   B1500000= $000100A;
+   B2000000= $000100B;
+   B2500000= $000100C;
+   B3000000= $000100D;
+   B3500000= $000100E;
+   B4000000= $000100F;
+
    CIBAUD  = $100F0000;
    CMSPAR  = $40000000;
    CRTSCTS = $80000000;