diff --git a/configs/uniphier_pro4_defconfig b/configs/uniphier_pro4_defconfig
index 6bfb6da..f0f47ee 100644
--- a/configs/uniphier_pro4_defconfig
+++ b/configs/uniphier_pro4_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-pro4-ref"