diff --git a/configs/hsdk_defconfig b/configs/hsdk_defconfig
index bd0c924..ce8f72d 100644
--- a/configs/hsdk_defconfig
+++ b/configs/hsdk_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_HSDK=y
 CONFIG_SYS_TEXT_BASE=0x81000000
 CONFIG_SYS_MALLOC_LEN=0x0200000
+CONFIG_SYS_MALLOC_F_LEN=0x400
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="hsdk"
 CONFIG_DEBUG_UART_BASE=0xf0005000