diff --git a/src/engine/datafacade/mmap_memory_allocator.cpp b/src/engine/datafacade/mmap_memory_allocator.cpp
index fb01ab175..05f5f39e4 100644
--- a/src/engine/datafacade/mmap_memory_allocator.cpp
+++ b/src/engine/datafacade/mmap_memory_allocator.cpp
@@ -50,9 +50,10 @@ MMapMemoryAllocator::MMapMemoryAllocator(const storage::StorageConfig &config)
                 std::make_unique<storage::TarDataLayout>();
             boost::iostreams::mapped_file_source mapped_memory_file;
             auto data = util::mmapFile<char>(file.second, mapped_memory_file).data();
-            mapped_memory_files.push_back(std::move(mapped_memory_file));
+            mapped_memory_files.emplace_back(std::move(mapped_memory_file));
             storage::populateLayoutFromFile(file.second, *layout);
-            allocated_regions.push_back({const_cast<char *>(data), std::move(layout)});
+            allocated_regions.emplace_back(storage::SharedDataIndex::AllocatedRegion{
+                const_cast<char *>(data), std::move(layout)});
         }
     }