diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
index c7cd739150..5da339850d 100644
--- a/boot/uboot/uboot.mk
+++ b/boot/uboot/uboot.mk
@@ -131,7 +131,7 @@ endif
 UBOOT_MAKE_OPTS += \
 	CROSS_COMPILE="$(TARGET_CROSS)" \
 	ARCH=$(UBOOT_ARCH) \
-	HOSTCC="$(HOSTCC) $(subst -I/,-idirafter /,$(subst -I /,-idirafter /,$(HOST_CFLAGS)))" \
+	HOSTCC="$(HOSTCC) $(subst -I/,-isystem /,$(subst -I /,-isystem /,$(HOST_CFLAGS)))" \
 	HOSTLDFLAGS="$(HOST_LDFLAGS)"
 
 ifeq ($(BR2_TARGET_UBOOT_NEEDS_ATF_BL31),y)