diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index aa2807d..213c615 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -47,7 +47,7 @@ config MTD_PHYSMAP_START
 config MTD_PHYSMAP_LEN
 	hex "Physical length of flash mapping"
 	depends on MTD_PHYSMAP_COMPAT
-	default "0"
+	default "0x4000000"
 	help
 	  This is the total length of the mapping of the flash chips on
 	  your particular board. If there is space, or aliases, in the