diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index c78ba4c4a0..478f5bfaef 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -2553,6 +2553,14 @@ static void fetchCallback(void* pResult, void* param, int32_t code) {
 }
 
 void taosAsyncFetchImpl(SRequestObj* pRequest, __taos_async_fn_t fp, void* param) {
+  if (pRequest->syncQuery && pRequest->body.param != param) {
+    if (pRequest->body.param) {
+      tsem_destroy(&((SSyncQueryParam *)pRequest->body.param)->sem);
+    }
+    taosMemoryFree(pRequest->body.param);
+    pRequest->syncQuery = false;
+  }
+  
   pRequest->body.fetchFp = fp;
   pRequest->body.param = param;