diff --git a/Makefile.inc b/Makefile.inc
index 71fdbc2..f85bbda 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -179,10 +179,10 @@
 	printf "#define COREBOOT_VERSION \"$(KERNELVERSION)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_EXTRA_VERSION \"$(COREBOOT_EXTRA_VERSION)\"\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_BUILD \"`LANG= date`\"\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_BUILD_YEAR `LANG= date +"%-y"`\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_BUILD_MONTH `LANG= date +"%-m"`\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_BUILD_DAY `LANG= date +"%-d"`\n" >> $(obj)/build.ht
-	printf "#define COREBOOT_BUILD_WEEKDAY `LANG= date +"%-w"`\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_BUILD_YEAR_BCD 0x`LANG= date +"%y"`\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_BUILD_MONTH_BCD 0x`LANG= date +"%m"`\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_BUILD_DAY_BCD 0x`LANG= date +"%d"`\n" >> $(obj)/build.ht
+	printf "#define COREBOOT_BUILD_WEEKDAY_BCD 0x`LANG= date +"%w"`\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_DMI_DATE \"`LANG= date +"%m/%d/%Y"`\"\n" >> $(obj)/build.ht
 	printf "\n" >> $(obj)/build.ht
 	printf "#define COREBOOT_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.ht