diff --git a/src/Storages/WindowView/BlocksListSource.h b/src/Storages/WindowView/BlocksListSource.h
deleted file mode 100644
index 66cb475bc9e..00000000000
--- a/src/Storages/WindowView/BlocksListSource.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#pragma once
-
-#include <Processors/Sources/SourceWithProgress.h>
-
-
-namespace DB
-{
-using BlocksListPtr = std::shared_ptr<BlocksList>;
-
-/** A stream of blocks from a shared list of blocks
-  */
-class BlocksListSource : public SourceWithProgress
-{
-public:
-    BlocksListSource(const BlocksListPtr & blocks_ptr_, Block header)
-        : SourceWithProgress(std::move(header))
-        , blocks(blocks_ptr_), it(blocks_ptr_->begin()), end(blocks_ptr_->end()) {}
-
-    String getName() const override { return "BlocksList"; }
-
-protected:
-    Chunk generate() override
-    {
-        if (it == end)
-            return {};
-
-        Block res = *it;
-        ++it;
-        return Chunk(res.getColumns(), res.rows());
-    }
-
-private:
-    BlocksListPtr blocks;
-    BlocksList::iterator it;
-    const BlocksList::iterator end;
-};
-
-}
diff --git a/src/Storages/WindowView/StorageWindowView.cpp b/src/Storages/WindowView/StorageWindowView.cpp
index 239978b07c4..a87e305d7c6 100644
--- a/src/Storages/WindowView/StorageWindowView.cpp
+++ b/src/Storages/WindowView/StorageWindowView.cpp
@@ -37,7 +37,6 @@
 #include <boost/lexical_cast.hpp>
 #include <Common/typeid_cast.h>
 
-#include <Storages/WindowView/BlocksListSource.h>
 #include <Storages/WindowView/ReplaceWindowColumnBlockInputStream.h>
 #include <Storages/WindowView/StorageWindowView.h>
 #include <Storages/WindowView/WatermarkBlockInputStream.h>