diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
index 2eb1792de9..a10e224501 100644
--- a/boot/uboot/uboot.mk
+++ b/boot/uboot/uboot.mk
@@ -525,7 +525,7 @@ UBOOT_DEPENDENCIES += \
 $(eval $(generic-package))
 else ifeq ($(BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG),y)
 UBOOT_MAKE_ENV = $(TARGET_MAKE_ENV)
-UBOOT_KCONFIG_DEPENDENCIES = \
+UBOOT_KCONFIG_DEPENDENCIES += \
 	$(BR2_MAKE_HOST_DEPENDENCY) \
 	$(BR2_BISON_HOST_DEPENDENCY) \
 	$(BR2_FLEX_HOST_DEPENDENCY)