diff --git a/src/mainboard/portwell/m107/Kconfig b/src/mainboard/portwell/m107/Kconfig
index 34adfd1b91..59a4bddb75 100644
--- a/src/mainboard/portwell/m107/Kconfig
+++ b/src/mainboard/portwell/m107/Kconfig
@@ -44,7 +44,7 @@ config MAINBOARD_PART_NUMBER
 
 config CBFS_SIZE
 	hex
-	default 0x00800000
+	default 0x00600000
 
 config MRC_SETTINGS_CACHE_SIZE
 	hex