diff --git a/include/common/tgrant.h b/include/common/tgrant.h
index ae58ba88ad..42adabd6f7 100644
--- a/include/common/tgrant.h
+++ b/include/common/tgrant.h
@@ -29,8 +29,8 @@ extern "C" {
 #endif
 
 #define GRANT_HEART_BEAT_MIN      2
-#define GRANT_MAX_EXPIRE_SEC      (31556995201)
-#define GRANT_EXPIRE_UNLIMITED(v) ((v) == GRANT_MAX_EXPIRE_SEC)
+#define GRANT_EXPIRE_VALUE        (31556995201)
+#define GRANT_EXPIRE_UNLIMITED(v) ((v) == GRANT_EXPIRE_VALUE)
 #define GRANT_ACTIVE_CODE         "activeCode"
 #define GRANT_FLAG_ALL            (0x01)
 #define GRANT_FLAG_AUDIT          (0x02)