diff --git a/src/wal/src/walMgmt.c b/src/wal/src/walMgmt.c
index 39ce2657aa2c27c2249d1492f5dbcde2517cc988..55ab9b031beaa35da49523af21c581a5aae47e3b 100644
--- a/src/wal/src/walMgmt.c
+++ b/src/wal/src/walMgmt.c
@@ -104,7 +104,7 @@ int32_t walAlter(void *handle, SWalCfg *pCfg) {
 
   pWal->level = pCfg->walLevel;
   pWal->fsyncPeriod = pCfg->fsyncPeriod;
-  pWal->fsyncSeq = pCfg->fsyncPeriod % 1000;
+  pWal->fsyncSeq = pCfg->fsyncPeriod / 1000;
   if (pWal->fsyncSeq <= 0) pWal->fsyncSeq = 1;
 
   return TSDB_CODE_SUCCESS;