diff --git a/src/mainboard/bostentech/gbyt4/Kconfig b/src/mainboard/bostentech/gbyt4/Kconfig
index 3027273c71..acfa313172 100644
--- a/src/mainboard/bostentech/gbyt4/Kconfig
+++ b/src/mainboard/bostentech/gbyt4/Kconfig
@@ -12,6 +12,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select SOC_INTEL_BAYTRAIL
 	select SUPERIO_ITE_IT8728F
 
+config CBFS_SIZE
+	default 0x500000
+
 config MAINBOARD_DIR
 	default "bostentech/gbyt4"