diff --git a/src/mainboard/emulation/qemu-i440fx/Kconfig b/src/mainboard/emulation/qemu-i440fx/Kconfig
index 1b61871..9b990ce 100644
--- a/src/mainboard/emulation/qemu-i440fx/Kconfig
+++ b/src/mainboard/emulation/qemu-i440fx/Kconfig
@@ -76,7 +76,7 @@
 
 config C_ENV_BOOTBLOCK_SIZE
 	hex
-	default 0x4000
+	default 0x10000
 
 config DCACHE_BSP_STACK_SIZE
 	hex