diff --git a/src/blockstore/interface/BlockStore.h b/src/blockstore/interface/BlockStore.h
index 41829c89..1d87d832 100644
--- a/src/blockstore/interface/BlockStore.h
+++ b/src/blockstore/interface/BlockStore.h
@@ -3,7 +3,6 @@
 #define FSPP_BLOCKSTORE_BLOCKSTORE_H_
 
 #include <blockstore/interface/Block.h>
-#include <blockstore/utils/BlockWithKey.h>
 #include <string>
 #include <memory>
 
@@ -16,7 +15,7 @@ class BlockStore {
 public:
   virtual ~BlockStore() {}
 
-  virtual BlockWithKey create(size_t size) = 0;
+  virtual std::unique_ptr<Block> create(size_t size) = 0;
   //TODO Use boost::optional (if key doesn't exist)
   // Return nullptr if block with this key doesn't exists
   virtual std::unique_ptr<Block> load(const Key &key) = 0;
diff --git a/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.cpp b/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.cpp
index 9bab4786..8962c63c 100644
--- a/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.cpp
+++ b/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.cpp
@@ -3,17 +3,18 @@
 using namespace blockstore;
 
 using std::string;
+using std::unique_ptr;
 
-BlockWithKey BlockStoreWithRandomKeys::create(size_t size) {
-  BlockWithKey result = tryCreate(size);
-  while (!result.block) {
+unique_ptr<Block> BlockStoreWithRandomKeys::create(size_t size) {
+  auto result = tryCreate(size);
+  while (!result) {
     result = tryCreate(size);
   }
   return result;
 }
 
-BlockWithKey BlockStoreWithRandomKeys::tryCreate(size_t size) {
+unique_ptr<Block> BlockStoreWithRandomKeys::tryCreate(size_t size) {
   Key key = Key::CreateRandomKey();
-  return BlockWithKey(key, create(key, size));
+  return create(key, size);
 }
 
diff --git a/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.h b/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.h
index 81ec82c1..05d639bb 100644
--- a/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.h
+++ b/src/blockstore/interface/helpers/BlockStoreWithRandomKeys.h
@@ -16,10 +16,10 @@ public:
   // Return nullptr if key already exists
   virtual std::unique_ptr<Block> create(const Key &key, size_t size) = 0;
 
-  BlockWithKey create(size_t size) final;
+  std::unique_ptr<Block> create(size_t size) final;
 
 private:
-  BlockWithKey tryCreate(size_t size);
+  std::unique_ptr<Block> tryCreate(size_t size);
 };
 
 }
diff --git a/src/blockstore/utils/BlockStoreUtils.cpp b/src/blockstore/utils/BlockStoreUtils.cpp
index cfd4e247..53671e70 100644
--- a/src/blockstore/utils/BlockStoreUtils.cpp
+++ b/src/blockstore/utils/BlockStoreUtils.cpp
@@ -8,9 +8,9 @@ using std::unique_ptr;
 namespace blockstore {
 namespace utils {
 
-BlockWithKey copyToNewBlock(BlockStore *blockStore, const Block &block) {
+unique_ptr<Block> copyToNewBlock(BlockStore *blockStore, const Block &block) {
   auto newBlock = blockStore->create(block.size());
-  std::memcpy(newBlock.block->data(), block.data(), block.size());
+  std::memcpy(newBlock->data(), block.data(), block.size());
   return newBlock;
 }
 
diff --git a/src/blockstore/utils/BlockStoreUtils.h b/src/blockstore/utils/BlockStoreUtils.h
index 5341cecd..d521fae4 100644
--- a/src/blockstore/utils/BlockStoreUtils.h
+++ b/src/blockstore/utils/BlockStoreUtils.h
@@ -3,14 +3,13 @@
 #define BLOCKSTORE_UTILS_BLOCKSTOREUTILS_H_
 
 #include <memory>
-#include "BlockWithKey.h"
 
 namespace blockstore {
 class BlockStore;
 class Block;
 namespace utils {
 
-BlockWithKey copyToNewBlock(BlockStore *blockStore, const Block &block);
+std::unique_ptr<Block> copyToNewBlock(BlockStore *blockStore, const Block &block);
 
 }
 }
diff --git a/src/blockstore/utils/BlockWithKey.h b/src/blockstore/utils/BlockWithKey.h
deleted file mode 100644
index f6edc276..00000000
--- a/src/blockstore/utils/BlockWithKey.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#pragma once
-#ifndef BLOCKSTORE_INTERFACE_BLOCKWITHKEY_H_
-#define BLOCKSTORE_INTERFACE_BLOCKWITHKEY_H_
-
-#include <blockstore/interface/Block.h>
-#include <memory>
-#include "fspp/utils/macros.h"
-#include "Key.h"
-
-namespace blockstore {
-
-struct BlockWithKey {
-  BlockWithKey(const Key &key_, std::unique_ptr<Block> block_): key(key_), block(std::move(block_)) {}
-
-  Key key;
-  std::unique_ptr<Block> block;
-};
-
-}
-
-#endif
diff --git a/src/test/blockstore/testutils/BlockStoreTest.h b/src/test/blockstore/testutils/BlockStoreTest.h
index 803f56a9..b92cad31 100644
--- a/src/test/blockstore/testutils/BlockStoreTest.h
+++ b/src/test/blockstore/testutils/BlockStoreTest.h
@@ -31,23 +31,23 @@ public:
 
   void TestCreatedBlockHasCorrectSize() {
     auto block = blockStore->create(size);
-    EXPECT_EQ(size, block.block->size());
+    EXPECT_EQ(size, block->size());
   }
 
   void TestLoadingUnchangedBlockHasCorrectSize() {
     auto block = blockStore->create(size);
-    auto loaded_block = blockStore->load(block.key);
+    auto loaded_block = blockStore->load(block->key());
     EXPECT_EQ(size, loaded_block->size());
   }
 
   void TestCreatedBlockIsZeroedOut() {
     auto block = blockStore->create(size);
-    EXPECT_EQ(0, std::memcmp(ZEROES(size).data(), block.block->data(), size));
+    EXPECT_EQ(0, std::memcmp(ZEROES(size).data(), block->data(), size));
   }
 
   void TestLoadingUnchangedBlockIsZeroedOut() {
     auto block = blockStore->create(size);
-    auto loaded_block = blockStore->load(block.key);
+    auto loaded_block = blockStore->load(block->key());
     EXPECT_EQ(0, std::memcmp(ZEROES(size).data(), loaded_block->data(), size));
   }
 
@@ -88,8 +88,8 @@ public:
     blockstore::Key key = key;
     {
       auto block = blockStore->create(size);
-      key = block.key;
-      WriteDataToBlock(block.block.get(), randomData);
+      key = block->key();
+      WriteDataToBlock(block.get(), randomData);
     }
     auto loaded_block = blockStore->load(key);
     EXPECT_BLOCK_DATA_CORRECT(*loaded_block, randomData);
@@ -99,7 +99,7 @@ public:
     DataBlockFixture randomData(size);
     blockstore::Key key = key;
     {
-      key = blockStore->create(size).key;
+      key = blockStore->create(size)->key();
       auto block = blockStore->load(key);
       WriteDataToBlock(block.get(), randomData);
     }
@@ -137,24 +137,24 @@ private:
 
   blockstore::Key StoreDataToBlockAndGetKey(const DataBlockFixture &data) {
     auto block = blockStore->create(data.size());
-    std::memcpy(block.block->data(), data.data(), data.size());
-    return block.key;
+    std::memcpy(block->data(), data.data(), data.size());
+    return block->key();
   }
 
   std::unique_ptr<blockstore::Block> StoreDataToBlockAndLoadItDirectlyAfterFlushing(const DataBlockFixture &data) {
     auto block = blockStore->create(data.size());
-    std::memcpy(block.block->data(), data.data(), data.size());
-    block.block->flush();
-    return blockStore->load(block.key);
+    std::memcpy(block->data(), data.data(), data.size());
+    block->flush();
+    return blockStore->load(block->key());
   }
 
   std::unique_ptr<blockstore::Block> CreateBlockAndLoadIt() {
-    blockstore::Key key = blockStore->create(size).key;
+    blockstore::Key key = blockStore->create(size)->key();
     return blockStore->load(key);
   }
 
   std::unique_ptr<blockstore::Block> CreateBlock() {
-    return blockStore->create(size).block;
+    return blockStore->create(size);
   }
 
   void WriteDataToBlock(blockstore::Block *block, const DataBlockFixture &randomData) {
@@ -195,7 +195,7 @@ TYPED_TEST_P(BlockStoreTest, TwoCreatedBlocksHaveDifferentKeys) {
   auto blockStore = this->fixture.createBlockStore();
   auto block1 = blockStore->create(1024);
   auto block2 = blockStore->create(1024);
-  EXPECT_NE(block1.key, block2.key);
+  EXPECT_NE(block1->key(), block2->key());
 }
 
 REGISTER_TYPED_TEST_CASE_P(BlockStoreTest,
diff --git a/src/test/blockstore/utils/BlockStoreUtilsTest.cpp b/src/test/blockstore/utils/BlockStoreUtilsTest.cpp
index b25837fc..9845b696 100644
--- a/src/test/blockstore/utils/BlockStoreUtilsTest.cpp
+++ b/src/test/blockstore/utils/BlockStoreUtilsTest.cpp
@@ -35,32 +35,32 @@ public:
 
 TEST_F(BlockStoreUtilsTest, CopyEmptyBlock) {
   auto block = blockStore->create(0);
-  auto block2 = copyToNewBlock(blockStore.get(), *block.block);
+  auto block2 = copyToNewBlock(blockStore.get(), *block);
 
-  EXPECT_EQ(0u, block2.block->size());
+  EXPECT_EQ(0u, block2->size());
 }
 
 TEST_F(BlockStoreUtilsTest, CopyZeroBlock) {
-  auto block = blockStore->create(SIZE).block;
-  auto block2 = copyToNewBlock(blockStore.get(), *block).block;
+  auto block = blockStore->create(SIZE);
+  auto block2 = copyToNewBlock(blockStore.get(), *block);
 
   EXPECT_EQ(SIZE, block2->size());
   EXPECT_EQ(0, std::memcmp(ZEROES.data(), block2->data(), SIZE));
 }
 
 TEST_F(BlockStoreUtilsTest, CopyDataBlock) {
-  auto block = blockStore->create(SIZE).block;
+  auto block = blockStore->create(SIZE);
   std::memcpy(block->data(), dataFixture.data(), SIZE);
-  auto block2 = copyToNewBlock(blockStore.get(), *block).block;
+  auto block2 = copyToNewBlock(blockStore.get(), *block);
 
   EXPECT_EQ(SIZE, block2->size());
   EXPECT_EQ(0, std::memcmp(dataFixture.data(), block2->data(), SIZE));
 }
 
 TEST_F(BlockStoreUtilsTest, OriginalBlockUnchanged) {
-  auto block = blockStore->create(SIZE).block;
+  auto block = blockStore->create(SIZE);
   std::memcpy(block->data(), dataFixture.data(), SIZE);
-  auto block2 = copyToNewBlock(blockStore.get(), *block).block;
+  auto block2 = copyToNewBlock(blockStore.get(), *block);
 
   EXPECT_EQ(SIZE, block->size());
   EXPECT_EQ(0, std::memcmp(dataFixture.data(), block->data(), SIZE));