diff --git a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
index bc5fcfc27c..f89e35dbb1 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
@@ -1126,7 +1126,7 @@ int32_t tMergeTreeNext(SMergeTree *pMTree, bool *pHasNext) {
       if (c > 0) {
         (void)tRBTreePut(&pMTree->rbt, (SRBTreeNode *)pMTree->pIter);
         pMTree->pIter = NULL;
-      } else {
+      } else if (!c) {
         return TSDB_CODE_INTERNAL_ERROR;
       }
     }