diff --git a/source/util/src/tlog.c b/source/util/src/tlog.c
index 8023541af3..b224eac8c2 100644
--- a/source/util/src/tlog.c
+++ b/source/util/src/tlog.c
@@ -269,7 +269,7 @@ static void taosUnLockLogFile(TdFilePtr pFile) {
 }
 
 static void taosReserveOldLog(char *oldName, char *keepName) {
-  if (tsLogKeepDays == 0) {
+  if (tsLogKeepDays <= 0) {
     keepName[0] = 0;
     return;
   }