diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index 36d8901bdfe26bdcc41ef9381f38600127ab0471..a01de1f4fe9e13a57e6a5f828fcd4ad97bd4a925 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -485,7 +485,7 @@ static int32_t tsdbSetRepoEnv(char *rootDir, STsdbCfg *pCfg) {
 
   if (mkdir(dirName, 0755) < 0) {
     tsdbError("vgId:%d failed to create directory %s since %s", pCfg->tsdbId, dirName, strerror(errno));
-    errno = TAOS_SYSTEM_ERROR(errno);
+    terrno = TAOS_SYSTEM_ERROR(errno);
     free(dirName);
     return -1;
   }