diff --git a/include/os/osDef.h b/include/os/osDef.h
index 297d19e21a..07cd197ad7 100644
--- a/include/os/osDef.h
+++ b/include/os/osDef.h
@@ -244,6 +244,16 @@ void syslog(int unused, const char *format, ...);
 #define TD_CHARSET_LEN  64
 #define TD_TIMEZONE_LEN 96
 
+#ifdef WINDOWS
+#define TD_PATH_MAX 260
+#elif defined(PATH_MAX)
+#define TD_PATH_MAX PATH_MAX
+#elif defined(_XOPEN_PATH_MAX)
+#define TD_PATH_MAX _XOPEN_PATH_MAX
+#else
+#define TD_PATH_MAX _POSIX_PATH_MAX
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/vnode/src/tsdb/tsdbOpen.c b/source/dnode/vnode/src/tsdb/tsdbOpen.c
index efc74b68ba..bb20a9b012 100644
--- a/source/dnode/vnode/src/tsdb/tsdbOpen.c
+++ b/source/dnode/vnode/src/tsdb/tsdbOpen.c
@@ -48,7 +48,7 @@ int tsdbOpen(SVnode *pVnode, STsdb **ppTsdb, const char *dir, STsdbKeepCfg *pKee
   }
 
   pTsdb->path = (char *)&pTsdb[1];
-  sprintf(pTsdb->path, "%s%s%s", pVnode->path, TD_DIRSEP, dir);
+  snprintf(pTsdb->path, TD_PATH_MAX, "%s%s%s", pVnode->path, TD_DIRSEP, dir);
   taosRealPath(pTsdb->path, NULL, slen);
   pTsdb->pVnode = pVnode;
   taosThreadRwlockInit(&pTsdb->rwLock, NULL);