diff --git a/src/mainboard/kontron/ktqm77/cmos.layout b/src/mainboard/kontron/ktqm77/cmos.layout
index 295ecd3a1d..a110956191 100644
--- a/src/mainboard/kontron/ktqm77/cmos.layout
+++ b/src/mainboard/kontron/ktqm77/cmos.layout
@@ -88,7 +88,8 @@ entries
 #411          5       r       0        unused
 
 # coreboot config options: bootloader
-416        424       s       0        boot_devices
+448         64       r       0        write_protected_by_bios
+512        328       s       0        boot_devices
 840          8       h       0        boot_default
 848          1       e       9        cmos_defaults_loaded
 #849          7       r       0        unused