diff --git a/src/drivers/elog/boot_count.c b/src/drivers/elog/boot_count.c
index c4373ee..fd86f39 100644
--- a/src/drivers/elog/boot_count.c
+++ b/src/drivers/elog/boot_count.c
@@ -30,7 +30,7 @@
 # include "option_table.h"
 # define BOOT_COUNT_CMOS_OFFSET (CMOS_VSTART_boot_count_offset >> 3)
 #else
-# if defined(CONFIG_ELOG_BOOT_COUNT_CMOS_OFFSET) && CONFIG_ELOG_BOOT_COUNT_CMOS_OFFSET
+# if (CONFIG_ELOG_BOOT_COUNT_CMOS_OFFSET != 0)
 #  define BOOT_COUNT_CMOS_OFFSET CONFIG_ELOG_BOOT_COUNT_CMOS_OFFSET
 # else
 #  error "Must configure CONFIG_ELOG_BOOT_COUNT_CMOS_OFFSET"