diff --git a/src/main/java/ru/soune/nocopy/service/file/FileUploadService.java b/src/main/java/ru/soune/nocopy/service/file/FileUploadService.java
index 5434dfb..d233b63 100644
--- a/src/main/java/ru/soune/nocopy/service/file/FileUploadService.java
+++ b/src/main/java/ru/soune/nocopy/service/file/FileUploadService.java
@@ -10,14 +10,13 @@ public interface FileUploadService {
     FileUploadSession initUpload(Long userId, String fileName,
                                  String fileType, String extension, long fileSize);
 
-    UploadProgressResponse uploadChunk(String uploadId, Integer chunkNumber,
-                                       MultipartFile chunkFile) throws IOException;
-
-    UploadProgressResponse getUploadProgress(String uploadId);
-
     void handleExpiredSession(FileUploadSession session);
 
     void cancelUpload(String uploadId);
 
+    void uploadChunk(String uploadId, Integer chunkNumber, MultipartFile chunkFile);
+
+    UploadProgressResponse getUploadProgress(String uploadId);
+
     void completeFileProcessingAsync(FileUploadSession session);
 }
diff --git a/src/main/java/ru/soune/nocopy/service/file/impl/FileUploadServiceImpl.java b/src/main/java/ru/soune/nocopy/service/file/impl/FileUploadServiceImpl.java
index 381b3a2..862a511 100644
--- a/src/main/java/ru/soune/nocopy/service/file/impl/FileUploadServiceImpl.java
+++ b/src/main/java/ru/soune/nocopy/service/file/impl/FileUploadServiceImpl.java
@@ -149,8 +149,36 @@ public class FileUploadServiceImpl implements FileUploadService {
 
     @Override
     @Transactional
-    public UploadProgressResponse uploadChunk(String uploadId, Integer chunkNumber,
-                                              MultipartFile chunkFile) {
+    public void handleExpiredSession(FileUploadSession session) {
+        session.setStatus(UploadStatus.FAILED);
+        session.setLastError("Upload session expired");
+        sessionRepository.save(session);
+
+        CompletableFuture.runAsync(() -> cleanupSessionFiles(session));
+    }
+
+    @Override
+    @Transactional
+    public void cancelUpload(String uploadId) {
+        FileUploadSession session = sessionRepository.findById(uploadId)
+                .orElseThrow(() -> new UploadSessionNotFoundException(uploadId));
+
+        if (session.getStatus() == UploadStatus.COMPLETED || session.getStatus() == UploadStatus.CANCELLED) {
+            throw new FileUploadException("Cannot cancel completed or cancelled upload");
+        }
+
+        session.setStatus(UploadStatus.CANCELLED);
+        sessionRepository.save(session);
+
+        CompletableFuture.runAsync(() -> cleanupSessionFiles(session));
+
+        log.info("Upload cancelled: {}", uploadId);
+    }
+
+    @Override
+    @Transactional
+    public void uploadChunk(String uploadId, Integer chunkNumber,
+                            MultipartFile chunkFile) {
         FileUploadSession session = sessionRepository.findById(uploadId)
                 .orElseThrow(() -> new UploadSessionNotFoundException(uploadId));
 
@@ -176,52 +204,7 @@ public class FileUploadServiceImpl implements FileUploadService {
             throw new ChunkSizeExceededException(chunkFile.getSize(), chunkSize);
         }
 
-        return processChunk(session, chunkNumber, chunkFile);
-    }
-
-    @Override
-    @Transactional
-    public void handleExpiredSession(FileUploadSession session) {
-        session.setStatus(UploadStatus.FAILED);
-        session.setLastError("Upload session expired");
-        sessionRepository.save(session);
-
-        CompletableFuture.runAsync(() -> cleanupSessionFiles(session));
-    }
-
-//    @Async("fileUploadTaskExecutor")
-//    @Transactional
-//    public void assembleFileAsync(FileUploadSession session) throws DuplicateImageException {
-//        try {
-//            assembleFile(session);
-//            log.info("File assembly completed successfully for session: {}",
-//                    session.getUploadId());
-//        } catch (DuplicateImageException e) {
-//            throw new DuplicateImageException("DUBL", e.duplicateFileId(), e.userId());
-//        } catch (Exception e) {
-//            log.error("Failed to assemble file for session {}: {}",
-//                    session.getUploadId(), e.getMessage(), e);
-//
-//            handleAssemblyFailure(session, e);
-//        }
-//    }
-
-    @Override
-    @Transactional
-    public void cancelUpload(String uploadId) {
-        FileUploadSession session = sessionRepository.findById(uploadId)
-                .orElseThrow(() -> new UploadSessionNotFoundException(uploadId));
-
-        if (session.getStatus() == UploadStatus.COMPLETED || session.getStatus() == UploadStatus.CANCELLED) {
-            throw new FileUploadException("Cannot cancel completed or cancelled upload");
-        }
-
-        session.setStatus(UploadStatus.CANCELLED);
-        sessionRepository.save(session);
-
-        CompletableFuture.runAsync(() -> cleanupSessionFiles(session));
-
-        log.info("Upload cancelled: {}", uploadId);
+        processChunk(session, chunkNumber, chunkFile);
     }
 
     @Override