diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 749658eca3..773243891f 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1964,6 +1964,7 @@ static void freeQueryInfoImpl(SQueryInfo* pQueryInfo) {
   pQueryInfo->tsBuf = tsBufDestroy(pQueryInfo->tsBuf);
 
   tfree(pQueryInfo->fillVal);
+  pQueryInfo->fillType = 0;
   tfree(pQueryInfo->buf);
 }