diff --git a/configs/Mele_M9_defconfig b/configs/Mele_M9_defconfig
index be6dd41..1338e09 100644
--- a/configs/Mele_M9_defconfig
+++ b/configs/Mele_M9_defconfig
@@ -7,6 +7,7 @@
 CONFIG_USB1_VBUS_PIN="PC27"
 CONFIG_USB2_VBUS_PIN=""
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SYS_PBSIZE=1024
 CONFIG_PHY_REALTEK=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_MII=y