diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 51c141c754..3593665de9 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -136,7 +136,7 @@ char tsSmlAutoChildTableNameDelimiter[TSDB_TABLE_NAME_LEN] = "";
 // checkpoint backup
 char tsSnodeIp[TSDB_FQDN_LEN] = {0};
 #ifdef WINDOWS
-char tsCheckpointBackupDir[PATH_MAX] = "C:\TDengine\data\backup\checkpoint\";
+char tsCheckpointBackupDir[PATH_MAX] = "C:\\TDengine\\data\\backup\\checkpoint\\";
 #else
 char tsCheckpointBackupDir[PATH_MAX] = "/var/lib/taos/backup/checkpoint/";
 #endif