diff --git a/src/wal/src/walMain.c b/src/wal/src/walMain.c
index 182600204259e703d171d6598f46a2a16cdcb27b..3492246a6f2610ba70874d534c2e9a34ac47c149 100644
--- a/src/wal/src/walMain.c
+++ b/src/wal/src/walMain.c
@@ -250,11 +250,13 @@ int walWrite(void *handle, SWalHead *pHead) {
   if (taosTWrite(pWal->fd, pHead, contLen) != contLen) {
     wError("wal:%s, failed to write(%s)", pWal->name, strerror(errno));
     terrno = TAOS_SYSTEM_ERROR(errno);
+    return terrno;
   } else {
     pWal->version = pHead->version;
   }
+  ASSERT(contLen == pHead->len + sizeof(SWalHead));
 
-  return terrno;
+  return 0;
 }
 
 void walFsync(void *handle) {
@@ -424,7 +426,7 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
     if (!taosCheckChecksumWhole((uint8_t *)pHead, sizeof(SWalHead))) {
       wWarn("wal:%s, cksum is messed up, skip the rest of file", name);
       terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
-      // ASSERT(false);
+      ASSERT(false);
       break;
     }