diff --git a/Kconfig b/Kconfig
index c435fb43182..ce25ea24a60 100644
--- a/Kconfig
+++ b/Kconfig
@@ -299,8 +299,8 @@ config SYS_MALLOC_F_LEN
 			 ROCKCHIP_RV1108
 	default 0x600 if ARCH_ZYNQMP_R5 || ARCH_ZYNQMP
 	default 0x800 if ARCH_ZYNQ || ROCKCHIP_RK3128 || ROCKCHIP_RK3188 || \
-			 ROCKCHIP_RK322X || X86
-	default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS
+			 ROCKCHIP_RK322X
+	default 0x1000 if ARCH_MESON || ARCH_BMIPS || ARCH_MTMIPS || X86
 	default 0x1800 if ARCH_TEGRA
 	default 0x4000 if SANDBOX || RISCV || ARCH_APPLE || ROCKCHIP_RK3368 || \
 			  ROCKCHIP_RK3399
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5aa134b6bcb..48b033e7e27 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -133,9 +133,6 @@ source "arch/x86/cpu/tangier/Kconfig"
 config AHCI
 	default y
 
-config SYS_MALLOC_F_LEN
-	default 0x800
-
 config RAMBASE
 	hex
 	default 0x100000
diff --git a/configs/qemu-x86_defconfig b/configs/qemu-x86_defconfig
index a3210bc4a5c..6bea902c947 100644
--- a/configs/qemu-x86_defconfig
+++ b/configs/qemu-x86_defconfig
@@ -1,6 +1,5 @@
 CONFIG_X86=y
 CONFIG_TEXT_BASE=0xFFF00000
-CONFIG_SYS_MALLOC_F_LEN=0x1000
 CONFIG_BLOBLIST_SIZE_RELOC=0x40000
 CONFIG_NR_DRAM_BANKS=8
 CONFIG_ENV_SIZE=0x40000