diff --git a/src/windows_aligned_file_reader.cpp b/src/windows_aligned_file_reader.cpp
index 3650b928a..9e6eef418 100644
--- a/src/windows_aligned_file_reader.cpp
+++ b/src/windows_aligned_file_reader.cpp
@@ -35,7 +35,8 @@ void WindowsAlignedFileReader::register_thread()
     std::unique_lock<std::mutex> lk(this->ctx_mut);
     if (this->ctx_map.find(std::this_thread::get_id()) != ctx_map.end())
     {
-        diskann::cout << "Warning:: Duplicate registration for thread_id : " << std::this_thread::get_id() << std::endl;
+        diskann::cout << "Warning:: Duplicate registration for thread_id : " << std::this_thread::get_id() << ", skip." << std::endl;
+        return;
     }
 
     IOContext ctx;