diff --git a/src/os/src/darwin/darwinSysInfo.c b/src/os/src/darwin/darwinSysInfo.c
index 55c07766b307f57fbc8fd76798ac880efef8a4de..6e70043779d01be361f66a67b16608b56a9285ed 100644
--- a/src/os/src/darwin/darwinSysInfo.c
+++ b/src/os/src/darwin/darwinSysInfo.c
@@ -217,7 +217,7 @@ void taosSetCoreDump() {}
 
 int32_t taosGetDiskSize(char *dataDir, SysDiskSize *diskSize) {
   struct statvfs info;
-  if (statvfs(tsDataDir, &info)) {
+  if (statvfs(dataDir, &info)) {
     uError("failed to get disk size, dataDir:%s errno:%s", tsDataDir, strerror(errno));
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
diff --git a/src/os/src/detail/osSysinfo.c b/src/os/src/detail/osSysinfo.c
index c0d46878a821db3490ccf54f8e303e37e52f84aa..bbda08aa25cdf6adb91a53157d8cd6be291d9381 100644
--- a/src/os/src/detail/osSysinfo.c
+++ b/src/os/src/detail/osSysinfo.c
@@ -319,7 +319,7 @@ bool taosGetCpuUsage(float *sysCpuUsage, float *procCpuUsage) {
 
 int32_t taosGetDiskSize(char *dataDir, SysDiskSize *diskSize) {
   struct statvfs info;
-  if (statvfs(tsDataDir, &info)) {
+  if (statvfs(dataDir, &info)) {
     uError("failed to get disk size, dataDir:%s errno:%s", tsDataDir, strerror(errno));
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;