diff --git a/configs/at91sam9261ek_dataflash_cs3_defconfig b/configs/at91sam9261ek_dataflash_cs3_defconfig
index d730e08..1873495 100644
--- a/configs/at91sam9261ek_dataflash_cs3_defconfig
+++ b/configs/at91sam9261ek_dataflash_cs3_defconfig
@@ -26,6 +26,7 @@
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_RESET_PHY_R=y
 CONFIG_SYS_PROMPT="U-Boot> "
+CONFIG_SYS_CBSIZE=256
 CONFIG_SYS_PBSIZE=281
 # CONFIG_CMD_BDI is not set
 # CONFIG_CMD_IMI is not set