diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index 4985783c90303dedc94bde03c49ad83f32876513..9941055df2918a907178b1d05e455c4ae3c418e5 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -3298,7 +3298,8 @@ void tscRetrieveDataRes(void *param, TAOS_RES *tres, int code) {
   // the param may be null, since it may be done by other query threads. and the asyncOnError may enter in this
   // function while kill query by a user.
   if (param == NULL) {
-    assert(code != TSDB_CODE_SUCCESS);
+    if(code != TSDB_CODE_SUCCESS)
+      tscError("tscRetrieveDataRes param is NULL, error code=%d", code);
     return;
   }