diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil2.h b/source/dnode/vnode/src/tsdb/tsdbUtil2.h
index e140194f9a..71f47a5f8e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil2.h
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil2.h
@@ -169,7 +169,7 @@ typedef struct {
   int64_t   maxVer;
   int32_t   numRec;
   int32_t   size[15];
-  uint32_t  cmprAlg;
+  int8_t    cmprAlg;
   int8_t    numOfPKs;  // number of primary keys
   int8_t    rsvd[6];
 } SBrinBlk;