diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index d8a052c161..24f3a84227 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -500,7 +500,7 @@ typedef struct {
 } SQueryTableMsg;
 
 typedef struct {
-  char     code;
+  int32_t  code;
   uint64_t qhandle;
 } SQueryTableRsp;