diff --git a/payloads/external/U-Boot/Makefile b/payloads/external/U-Boot/Makefile
index 67c60c1535..653662f0ff 100644
--- a/payloads/external/U-Boot/Makefile
+++ b/payloads/external/U-Boot/Makefile
@@ -30,6 +30,7 @@ unexport KCONFIG_DEPENDENCIES
 unexport KCONFIG_SPLITCONFIG
 unexport KCONFIG_TRISTATE
 unexport KCONFIG_NEGATIVES
+unexport $(COREBOOT_EXPORTS)
 
 all: build