diff --git a/configs/at91sam9g20ek_nandflash_defconfig b/configs/at91sam9g20ek_nandflash_defconfig
index d7a57db..9b9c918 100644
--- a/configs/at91sam9g20ek_nandflash_defconfig
+++ b/configs/at91sam9g20ek_nandflash_defconfig
@@ -24,6 +24,7 @@
 CONFIG_BOOTCOMMAND="nand read 0x22000000 0x200000 0x300000; bootm"
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SYS_PROMPT="U-Boot> "
+CONFIG_SYS_PBSIZE=281
 # CONFIG_CMD_BDI is not set
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMI is not set