diff --git a/dbms/src/Storages/StorageLiveView.h b/dbms/src/Storages/StorageLiveView.h
index 01dd82ff1fd..69410ec4e8b 100644
--- a/dbms/src/Storages/StorageLiveView.h
+++ b/dbms/src/Storages/StorageLiveView.h
@@ -202,7 +202,7 @@ public:
             }
 
             /// Need make new mergeable block structure match the other mergeable blocks
-            if (!mergeable_blocks->front()->empty() && !new_mergeable_blocks->empty())
+            if (!mergeable_blocks->front()->empty())
             {
                 auto sample_block = mergeable_blocks->front()->front();
                 auto sample_new_block = new_mergeable_blocks->front();
@@ -237,6 +237,9 @@ public:
             blocks->push_back(this_block);
         }
 
+        if (blocks->empty())
+            return;
+
         auto sample_block = blocks->front().cloneEmpty();
         BlockInputStreamPtr new_data = std::make_shared<BlocksBlockInputStream>(std::make_shared<BlocksPtr>(blocks), sample_block);