diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index f40cab600f..79989a5560 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -16,6 +16,7 @@
 #include "tsdb.h"
 
 struct STsdbSnapshotReader {
+  STsdb* pTsdb;
   // TODO
 };