diff --git a/configs/kmcoge5un_defconfig b/configs/kmcoge5un_defconfig
index f814e6b..2474322 100644
--- a/configs/kmcoge5un_defconfig
+++ b/configs/kmcoge5un_defconfig
@@ -26,6 +26,7 @@
 CONFIG_RESET_PHY_R=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_MAXARGS=32
+CONFIG_SYS_CBSIZE=512
 CONFIG_SYS_PBSIZE=532
 # CONFIG_BOOTM_NETBSD is not set
 # CONFIG_BOOTM_PLAN9 is not set