diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index 7a44870938f943e1aec667f4ecf0890fd394ff43..b38e6377a9e56d38966d9b3b13d8d87735972c4b 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -157,7 +157,7 @@ typedef struct SParamInfo {
   int32_t  idx;
   char     type;
   uint8_t  timePrec;
-  short    bytes;
+  int16_t  bytes;
   uint32_t offset;
 } SParamInfo;
 
diff --git a/src/client/src/tscPrepare.c b/src/client/src/tscPrepare.c
index 3ddfc1c34126d5b1d26a8dafb2e6e1e2481c880a..0df1c7ddc514f133f8c4b53852613b8c212ecfb6 100644
--- a/src/client/src/tscPrepare.c
+++ b/src/client/src/tscPrepare.c
@@ -298,7 +298,7 @@ static int doBindParam(char* data, SParamInfo* param, TAOS_BIND* bind) {
       break;
 
     case TSDB_DATA_TYPE_BINARY:
-      if ((*bind->length) > param->bytes) {
+      if ((*bind->length) > (uintptr_t)param->bytes) {
         return TSDB_CODE_TSC_INVALID_VALUE;
       }
       size = (short)*bind->length;
diff --git a/src/inc/taos.h b/src/inc/taos.h
index 1d609bc7dbb7f5fe9bc1c26b169fcbdbac973cef..f3cc9bb4d79f1ca23d983154e7dad17f07802926 100644
--- a/src/inc/taos.h
+++ b/src/inc/taos.h
@@ -72,8 +72,8 @@ DLL_EXPORT void  taos_close(TAOS *taos);
 typedef struct TAOS_BIND {
   int            buffer_type;
   void *         buffer;
-  unsigned long  buffer_length;  // unused
-  unsigned long *length;
+  uintptr_t      buffer_length;  // unused
+  uintptr_t      *length;
   int *          is_null;
   int            is_unsigned;  // unused
   int *          error;        // unused