diff --git a/src/client/src/tscLocal.c b/src/client/src/tscLocal.c
index fdb0ba41021098795c9414f6047768a44bbf8a2a..41151803e15326632cc667fbf977afcdb53e73e2 100644
--- a/src/client/src/tscLocal.c
+++ b/src/client/src/tscLocal.c
@@ -224,7 +224,7 @@ static int32_t tscGetNthFieldResult(TAOS_ROW row, TAOS_FIELD* fields, int *lengt
   int32_t length = lengths[idx]; 
 
   if (type == TSDB_DATA_TYPE_JSON){
-    char* p = result;
+    char* p = val;
     type = *p;
     val += CHAR_BYTES;
     if(type == TSDB_DATA_TYPE_NCHAR) {