diff --git a/configs/Chuwi_V7_CW0825_defconfig b/configs/Chuwi_V7_CW0825_defconfig
index 02b3e69..d517ab9 100644
--- a/configs/Chuwi_V7_CW0825_defconfig
+++ b/configs/Chuwi_V7_CW0825_defconfig
@@ -15,6 +15,7 @@
 CONFIG_VIDEO_LCD_PANEL_HITACHI_TX18D42VM=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL_I2C=y
+CONFIG_SYS_PBSIZE=1024
 CONFIG_SYS_I2C_MVTWSI=y
 CONFIG_SYS_I2C_SLAVE=0x7f
 CONFIG_SYS_I2C_SPEED=400000