diff --git a/Makefile b/Makefile
index 1d4a4889af..f12b61659e 100644
--- a/Makefile
+++ b/Makefile
@@ -176,7 +176,7 @@ real-all: real-target
 .SECONDEXPANSION:
 .DELETE_ON_ERROR:
 
-$(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG)
+$(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG) $(objutil)/kconfig/conf
 	+$(MAKE) oldconfig
 
 # Add a new class of source/object files to the build system
diff --git a/Makefile.inc b/Makefile.inc
index 1d6a671d52..f684f59aef 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -287,7 +287,7 @@ cbfs-files-processor-vsa= \
 # arg1: input
 # arg2: output
 cbfs-files-processor-defconfig= \
-	$(eval $(2): $(1) $(obj)/build.h; \
+	$(eval $(2): $(1) $(obj)/build.h $(objutil)/kconfig/conf; \
 		+printf "    CREATE     $(2) (from $(1))\n"; \
 		printf "\# This image was built using coreboot " > $(2).tmp && \
 		grep "\<COREBOOT_VERSION\>" $(obj)/build.h |cut -d\" -f2 >> $(2).tmp && \