diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index 6adf2f1be161bc73de1891175a56c9b34f26072f..147d9d23cd698d35d903d8f9fa3b378a282b84d5 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -390,7 +390,7 @@ typedef struct _sql_obj {
   tsem_t            emptyRspSem;
   SSqlCmd           cmd;
   SSqlRes           res;
-  uint8_t           numOfSubs;
+  uint16_t          numOfSubs;
   char*             asyncTblPos;
   void*             pTableHashList;
   struct _sql_obj **pSubs;