diff --git a/src/Storages/MergeTree/MergeTreeDataWriter.cpp b/src/Storages/MergeTree/MergeTreeDataWriter.cpp
index 52eace30657..f3da98f0ba3 100644
--- a/src/Storages/MergeTree/MergeTreeDataWriter.cpp
+++ b/src/Storages/MergeTree/MergeTreeDataWriter.cpp
@@ -139,7 +139,6 @@ BlocksWithPartition MergeTreeDataWriter::splitBlockIntoParts(const Block & block
         return result;
 
     data.check(block, true);
-    block.checkNumberOfRows();
 
     if (!data.hasPartitionKey()) /// Table is not partitioned.
     {