diff --git a/src/mainboard/hp/compaq_8200_elite_sff/Kconfig b/src/mainboard/hp/compaq_8200_elite_sff/Kconfig
index e3b2ebd1f9..6734d5bf2a 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/Kconfig
+++ b/src/mainboard/hp/compaq_8200_elite_sff/Kconfig
@@ -19,6 +19,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select INTEL_GMA_HAVE_VBT
 	select MAINBOARD_USES_IFD_GBE_REGION
 
+config CBFS_SIZE
+	default 0x2F0000
+
 config MAINBOARD_DIR
 	string
 	default "hp/compaq_8200_elite_sff"
diff --git a/src/mainboard/hp/z220_sff_workstation/Kconfig b/src/mainboard/hp/z220_sff_workstation/Kconfig
index dc288d6940..8f28baf82d 100644
--- a/src/mainboard/hp/z220_sff_workstation/Kconfig
+++ b/src/mainboard/hp/z220_sff_workstation/Kconfig
@@ -30,6 +30,9 @@ config VBOOT_VBNV_OFFSET
 	hex
 	default 0x2a
 
+config CBFS_SIZE
+	default 0x570000
+
 config MAINBOARD_DIR
 	string
 	default "hp/z220_sff_workstation"