diff --git a/arch/arm/cpu/armv7/uniphier/Kconfig b/arch/arm/cpu/armv7/uniphier/Kconfig
index 1a47ac9..8fdef28 100644
--- a/arch/arm/cpu/armv7/uniphier/Kconfig
+++ b/arch/arm/cpu/armv7/uniphier/Kconfig
@@ -52,7 +52,7 @@
 	default y
 
 config SYS_MALLOC_F_LEN
-	default 0x2000
+	default 0x400
 
 config CMD_PINMON
 	bool "Enable boot mode pins monitor command"