diff --git a/src/mainboard/google/bluey/chromeos.fmd b/src/mainboard/google/bluey/chromeos.fmd
index 01a2331b22..b70b49811d 100644
--- a/src/mainboard/google/bluey/chromeos.fmd
+++ b/src/mainboard/google/bluey/chromeos.fmd
@@ -1,7 +1,7 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 FLASH@0x0 CONFIG_ROM_SIZE {
-	WP_RO 12M {
+	WP_RO 8M {
 		RO_SECTION {
 			BOOTBLOCK 512K
 			FMAP 4K
@@ -38,5 +38,7 @@ FLASH@0x0 CONFIG_ROM_SIZE {
 		RW_FWID_B 256
 	}
 
+	RW_UNUSED 4M
+
 	RW_LEGACY(CBFS)
 }