diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index fb5bbe6c2d2442376f8937820822f654e1b41163..54ea17657a263a4fb66e6c944f2e7224fdca3f39 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -489,7 +489,7 @@ typedef struct {
   int16_t     numOfCols;        // the number of columns will be load from vnode
   SInterval   interval;
   SSessionWindow sw;            // session window
-  uint16_t    tagCondLen;       // tag length in current query
+  uint32_t    tagCondLen;       // tag length in current query
   uint32_t    tbnameCondLen;    // table name filter condition string length
   int16_t     numOfGroupCols;   // num of group by columns
   int16_t     orderByIdx;