diff --git a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
index bf79b2482d..3d50c81a5d 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
@@ -104,7 +104,7 @@ int32_t tsdbOpenFile(const char *path, STsdb *pTsdb, int32_t flag, STsdbFD **ppF
   }
 
   pFD->path = (char *)&pFD[1];
-  tstrncpy(pFD->path, path, strlen(path) + 1);
+  memcpy(pFD->path, path, strlen(path) + 1);
   pFD->szPage = szPage;
   pFD->flag = flag;
   pFD->szPage = szPage;
diff --git a/source/dnode/vnode/src/vnd/vnodeAsync.c b/source/dnode/vnode/src/vnd/vnodeAsync.c
index 424ed0f325..3f40ace6c4 100644
--- a/source/dnode/vnode/src/vnd/vnodeAsync.c
+++ b/source/dnode/vnode/src/vnd/vnodeAsync.c
@@ -330,7 +330,7 @@ static int32_t vnodeAsyncInit(SVAsync **async, const char *label) {
     return terrno;
   }
 
-  tstrncpy((char *)((*async) + 1), label, strlen(label) + 1);
+  memcpy((char *)((*async) + 1), label, strlen(label) + 1);
   (*async)->label = (const char *)((*async) + 1);
 
   (void)taosThreadMutexInit(&(*async)->mutex, NULL);
diff --git a/source/dnode/vnode/src/vnd/vnodeOpen.c b/source/dnode/vnode/src/vnd/vnodeOpen.c
index b9e686932e..945b4cbeae 100644
--- a/source/dnode/vnode/src/vnd/vnodeOpen.c
+++ b/source/dnode/vnode/src/vnd/vnodeOpen.c
@@ -417,7 +417,7 @@ SVnode *vnodeOpen(const char *path, int32_t diskPrimary, STfs *pTfs, SMsgCb msgC
   }
 
   pVnode->path = (char *)&pVnode[1];
-  tstrncpy(pVnode->path, path, strlen(path) + 1);
+  memcpy(pVnode->path, path, strlen(path) + 1);
   pVnode->config = info.config;
   pVnode->state.committed = info.state.committed;
   pVnode->state.commitTerm = info.state.commitTerm;